121021112211012 has 72 divisors (see below), whose sum is σ = 330813358675800. Its totient is φ = 37082753786880.

The previous prime is 121021112211001. The next prime is 121021112211029. The reversal of 121021112211012 is 210112211120121.

It is a happy number.

121021112211012 is a `hidden beast` number, since 1 + 210 + 211 + 1 + 221 + 10 + 12 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 725535982656 + 120295576228356 = 851784^2 + 10967934^2 .

It is a super-2 number, since 2×121021112211012² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 536385387 + ... + 536610962.

Almost surely, 2^{121021112211012} is an apocalyptic number.

121021112211012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121021112211012 is an abundant number, since it is smaller than the sum of its proper divisors (209792246464788).

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

121021112211012 is a wasteful number, since it uses less digits than its factorization.

121021112211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072996613 (or 1072996608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121021112211012 its reverse (210112211120121), we get a palindrome (331133323331133).

The spelling of 121021112211012 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred twelve million, two hundred eleven thousand, twelve".