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212051334520 = 235231371682413
BaseRepresentation
bin1100010101111100111…
…1101001010101111000
3202021100012222220120101
43011133033221111320
511433240120201040
6241225352005144
721214554414034
oct3053717512570
9667305886511
10212051334520
1181a264a51a3
123511b6907b4
1316cc4cb864c
14a3988631c4
1557b148509a
hex315f3e9578

212051334520 has 64 divisors (see below), whose sum is σ = 501493965120. Its totient is φ = 80540427264.

The previous prime is 212051334493. The next prime is 212051334553. The reversal of 212051334520 is 25433150212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715167 + ... + 967246.

It is an arithmetic number, because the mean of its divisors is an integer number (7835843205).

Almost surely, 2212051334520 is an apocalyptic number.

212051334520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212051334520 is an abundant number, since it is smaller than the sum of its proper divisors (289442630600).

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

212051334520 is a wasteful number, since it uses less digits than its factorization.

212051334520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682584 (or 1682580 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 212051334520 its reverse (25433150212), we get a palindrome (237484484732).

The spelling of 212051334520 in words is "two hundred twelve billion, fifty-one million, three hundred thirty-four thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 20 23 40 46 92 115 137 184 230 274 460 548 685 920 1096 1370 2740 3151 5480 6302 12604 15755 25208 31510 63020 126040 1682413 3364826 6729652 8412065 13459304 16824130 33648260 38695499 67296520 77390998 154781996 193477495 230490581 309563992 386954990 460981162 773909980 921962324 1152452905 1547819960 1843924648 2304905810 4609811620 5301283363 9219623240 10602566726 21205133452 26506416815 42410266904 53012833630 106025667260 212051334520