121211102021112 has 64 divisors (see below), whose sum is σ = 337001110884000. Its totient is φ = 40367268041472.

The previous prime is 121211102021069. The next prime is 121211102021123. The reversal of 121211102021112 is 211120201112121.

It is a happy number.

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

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, 252764293 + ... + 253243380.

Almost surely, 2^{121211102021112} is an apocalyptic number.

121211102021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121211102021112 is an abundant number, since it is smaller than the sum of its proper divisors (215790008862888).

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

121211102021112 is a wasteful number, since it uses less digits than its factorization.

121211102021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506008797 (or 506008787 counting only the distinct ones).

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

Adding to 121211102021112 its reverse (211120201112121), we get a palindrome (332331303133233).

The spelling of 121211102021112 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred two million, twenty-one thousand, one hundred twelve".