102111021011210 has 32 divisors (see below), whose sum is σ = 185245578724752. Its totient is φ = 40524380323840.

The previous prime is 102111021011183. The next prime is 102111021011227. The reversal of 102111021011210 is 12110120111201.

It can be written as a sum of positive squares in 8 ways, for example, as 18692591721049 + 83418429290161 = 4323493^2 + 9133369^2 .

It is a super-2 number, since 2×102111021011210² (a number of 29 digits) contains 22 as substring.

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, 77324759 + ... + 78634218.

Almost surely, 2^{102111021011210} is an apocalyptic number.

102111021011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102111021011210 is a deficient number, since it is larger than the sum of its proper divisors (83134557713542).

102111021011210 is a wasteful number, since it uses less digits than its factorization.

102111021011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155959498.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 102111021011210 its reverse (12110120111201), we get a palindrome (114221141122411).

Subtracting from 102111021011210 its reverse (12110120111201), we obtain a palindrome (90000900900009).

The spelling of 102111021011210 in words is "one hundred two trillion, one hundred eleven billion, twenty-one million, eleven thousand, two hundred ten".