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21112023200 = 2552297911519
BaseRepresentation
bin10011101010010111…
…111110100010100000
32000111022222220022012
4103222113332202200
5321214134220300
613410531532052
71345114144022
oct235227764240
960438886265
1021112023200
118a54206564
12411245a028
131cb5ba8028
141043c74012
158386c9435
hex4ea5fe8a0

21112023200 has 144 divisors (see below), whose sum is σ = 53996544000. Its totient is φ = 8049699840.

The previous prime is 21112023193. The next prime is 21112023221. The reversal of 21112023200 is 232021112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1827041 + ... + 1838559.

It is an arithmetic number, because the mean of its divisors is an integer number (374976000).

Almost surely, 221112023200 is an apocalyptic number.

21112023200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112023200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26998272000).

21112023200 is an abundant number, since it is smaller than the sum of its proper divisors (32884520800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21112023200 is a wasteful number, since it uses less digits than its factorization.

21112023200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11647 (or 11634 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21112023200 its reverse (232021112), we get a palindrome (21344044312).

The spelling of 21112023200 in words is "twenty-one billion, one hundred twelve million, twenty-three thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 29 32 40 50 58 79 80 100 116 145 158 160 200 232 290 316 395 400 464 580 632 725 790 800 928 1160 1264 1450 1580 1975 2291 2320 2528 2900 3160 3950 4582 4640 5800 6320 7900 9164 11455 11519 11600 12640 15800 18328 22910 23038 23200 31600 36656 45820 46076 57275 57595 63200 73312 91640 92152 114550 115190 183280 184304 229100 230380 287975 334051 366560 368608 458200 460760 575950 668102 910001 916400 921520 1151900 1336204 1670255 1820002 1832800 1843040 2303800 2672408 3340510 3640004 4550005 4607600 5344816 6681020 7280008 8351275 9100010 9215200 10689632 13362040 14560016 16702550 18200020 22750025 26390029 26724080 29120032 33405100 36400040 45500050 52780058 53448160 66810200 72800080 91000100 105560116 131950145 133620400 145600160 182000200 211120232 263900290 267240800 364000400 422240464 527800580 659750725 728000800 844480928 1055601160 1319501450 2111202320 2639002900 4222404640 5278005800 10556011600 21112023200