215513242124120 has 64 divisors (see below), whose sum is σ = 500925803869440. Its totient is φ = 83361327667200.

The previous prime is 215513242124107. The next prime is 215513242124203. The reversal of 215513242124120 is 21421242315512.

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, 64145837 + ... + 67421916.

It is an arithmetic number, because the mean of its divisors is an integer number (7826965685460).

Almost surely, 2^{215513242124120} is an apocalyptic number.

215513242124120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215513242124120 is an abundant number, since it is smaller than the sum of its proper divisors (285412561745320).

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

215513242124120 is a wasteful number, since it uses less digits than its factorization.

215513242124120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131569116 (or 131569112 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 215513242124120 its reverse (21421242315512), we get a palindrome (236934484439632).

The spelling of 215513242124120 in words is "two hundred fifteen trillion, five hundred thirteen billion, two hundred forty-two million, one hundred twenty-four thousand, one hundred twenty".