121120112120 has 64 divisors (see below), whose sum is σ = 312195340800. Its totient is φ = 41427745920.

The previous prime is 121120112077. The next prime is 121120112137. The reversal of 121120112120 is 21211021121.

It is a super-2 number, since 2×121120112120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 121120112095 and 121120112104.

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, 398876 + ... + 633515.

It is an arithmetic number, because the mean of its divisors is an integer number (4878052200).

Almost surely, 2^121120112120 is an apocalyptic number.

121120112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121120112120 is an abundant number, since it is smaller than the sum of its proper divisors (191075228680).

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

121120112120 is a wasteful number, since it uses less digits than its factorization.

121120112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032828 (or 1032824 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121120112120 its reverse (21211021121), we get a palindrome (142331133241).

Subtracting from 121120112120 its reverse (21211021121), we obtain a palindrome (99909090999).

The spelling of 121120112120 in words is "one hundred twenty-one billion, one hundred twenty million, one hundred twelve thousand, one hundred twenty".