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12212102210 = 25711103115383
BaseRepresentation
bin10110101111110010…
…11110010001000010
31011112002020001212212
423113321132101002
5200002244232320
65335443422122
7611425104350
oct132771362102
934462201785
1012212102210
1151a7460160
122449984942
1311c80984a9
1483bc707d0
154b71ba9c5
hex2d7e5e442

12212102210 has 64 divisors (see below), whose sum is σ = 27434225664. Its totient is φ = 3802430400.

The previous prime is 12212102209. The next prime is 12212102233. The reversal of 12212102210 is 1220121221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 786179 + ... + 801561.

It is an arithmetic number, because the mean of its divisors is an integer number (428659776).

Almost surely, 212212102210 is an apocalyptic number.

12212102210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12212102210 is an abundant number, since it is smaller than the sum of its proper divisors (15222123454).

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

12212102210 is a wasteful number, since it uses less digits than its factorization.

12212102210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16439.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12212102210 its reverse (1220121221), we get a palindrome (13432223431).

The spelling of 12212102210 in words is "twelve billion, two hundred twelve million, one hundred two thousand, two hundred ten".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 77 110 154 385 770 1031 2062 5155 7217 10310 11341 14434 15383 22682 30766 36085 56705 72170 76915 79387 107681 113410 153830 158774 169213 215362 338426 396935 538405 793870 846065 1076810 1184491 1692130 2368982 5922455 11844910 15859873 31719746 79299365 111019111 158598730 174458603 222038222 348917206 555095555 872293015 1110191110 1221210221 1744586030 2442420442 6106051105 12212102210