102111100021212 has 96 divisors (see below), whose sum is σ = 246341984114688. Its totient is φ = 32901702211584.

The previous prime is 102111100021193. The next prime is 102111100021253. The reversal of 102111100021212 is 212120001111201.

It is a happy number.

It is a super-2 number, since 2×102111100021212² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102111100021191 and 102111100021200.

It is a congruent number.

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, 24726498 + ... + 28559094.

It is an arithmetic number, because the mean of its divisors is an integer number (2566062334528).

Almost surely, 2^{102111100021212} is an apocalyptic number.

102111100021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102111100021212 is an abundant number, since it is smaller than the sum of its proper divisors (144230884093476).

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

102111100021212 is a wasteful number, since it uses less digits than its factorization.

102111100021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833235 (or 3833233 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102111100021212 its reverse (212120001111201), we get a palindrome (314231101132413).

The spelling of 102111100021212 in words is "one hundred two trillion, one hundred eleven billion, one hundred million, twenty-one thousand, two hundred twelve".