121122120012120 has 96 divisors (see below), whose sum is σ = 394179565993200. Its totient is φ = 32255525258496.

The previous prime is 121122120012107. The next prime is 121122120012169. The reversal of 121122120012120 is 21210021221121.

121122120012120 is a `hidden beast` number, since 1 + 211 + 221 + 20 + 0 + 1 + 212 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 121122120012093 and 121122120012102.

It is a congruent number.

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, 227372887 + ... + 227904966.

Almost surely, 2^{121122120012120} is an apocalyptic number.

121122120012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122120012120 is an abundant number, since it is smaller than the sum of its proper divisors (273057445981080).

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

121122120012120 is a wasteful number, since it uses less digits than its factorization.

121122120012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455278609 (or 455278602 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121122120012120 its reverse (21210021221121), we get a palindrome (142332141233241).

The spelling of 121122120012120 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred twenty million, twelve thousand, one hundred twenty".