121122120120 has 64 divisors (see below), whose sum is σ = 363641905440. Its totient is φ = 32274739200.

The previous prime is 121122120103. The next prime is 121122120137. The reversal of 121122120120 is 21021221121.

It is an interprime number because it is at equal distance from previous prime (121122120103) and next prime (121122120137).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121122120120.

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, 223521 + ... + 540560.

Almost surely, 2^121122120120 is an apocalyptic number.

121122120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122120120 is an abundant number, since it is smaller than the sum of its proper divisors (242519785320).

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

121122120120 is a wasteful number, since it uses less digits than its factorization.

121122120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765416 (or 765412 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121122120120 its reverse (21021221121), we get a palindrome (142143341241).

The spelling of 121122120120 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty".