121110120120 has 64 divisors (see below), whose sum is σ = 396360397440. Its totient is φ = 29360028800.

The previous prime is 121110120113. The next prime is 121110120133. The reversal of 121110120120 is 21021011121.

It is a super-2 number, since 2×121110120120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 121110120096 and 121110120105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45873726 + ... + 45876365.

It is an arithmetic number, because the mean of its divisors is an integer number (6193131210).

Almost surely, 2^121110120120 is an apocalyptic number.

121110120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121110120120 is an abundant number, since it is smaller than the sum of its proper divisors (275250277320).

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

121110120120 is a wasteful number, since it uses less digits than its factorization.

121110120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91750116 (or 91750112 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121110120120 its reverse (21021011121), we get a palindrome (142131131241).

The spelling of 121110120120 in words is "one hundred twenty-one billion, one hundred ten million, one hundred twenty thousand, one hundred twenty".