215015020120 has 64 divisors (see below), whose sum is σ = 526086096480. Its totient is φ = 78759069696.

The previous prime is 215015020111. The next prime is 215015020123. The reversal of 215015020120 is 21020510512.

215015020120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215015020123) by changing a digit.

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, 4247794 + ... + 4298113.

Almost surely, 2^215015020120 is an apocalyptic number.

215015020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215015020120 is an abundant number, since it is smaller than the sum of its proper divisors (311071076360).

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

215015020120 is a wasteful number, since it uses less digits than its factorization.

215015020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545972 (or 8545968 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 215015020120 its reverse (21020510512), we get a palindrome (236035530632).

The spelling of 215015020120 in words is "two hundred fifteen billion, fifteen million, twenty thousand, one hundred twenty".