121056020 has 48 divisors (see below), whose sum is σ = 262725120. Its totient is φ = 46827264.

The previous prime is 121055999. The next prime is 121056029. The reversal of 121056020 is 20650121.

It is a self number, because there is not a number n which added to its sum of digits gives 121056020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121056029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82937 + ... + 84383.

It is an arithmetic number, because the mean of its divisors is an integer number (5473440).

Almost surely, 2^121056020 is an apocalyptic number.

121056020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121056020 is an abundant number, since it is smaller than the sum of its proper divisors (141669100).

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

121056020 is a wasteful number, since it uses less digits than its factorization.

121056020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592 (or 1590 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121056020 is about 11002.5460689788. The cubic root of 121056020 is about 494.6850630767.

The spelling of 121056020 in words is "one hundred twenty-one million, fifty-six thousand, twenty".