121011112120 has 32 divisors (see below), whose sum is σ = 272531236320. Its totient is φ = 48358892160.

The previous prime is 121011112063. The next prime is 121011112127. The reversal of 121011112120 is 21211110121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121011112120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011112127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380471 + ... + 1465510.

It is an arithmetic number, because the mean of its divisors is an integer number (8516601135).

Almost surely, 2^121011112120 is an apocalyptic number.

121011112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011112120 is an abundant number, since it is smaller than the sum of its proper divisors (151520124200).

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

121011112120 is a wasteful number, since it uses less digits than its factorization.

121011112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847055 (or 2847051 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121011112120 its reverse (21211110121), we get a palindrome (142222222241).

The spelling of 121011112120 in words is "one hundred twenty-one billion, eleven million, one hundred twelve thousand, one hundred twenty".