215122013320 has 32 divisors (see below), whose sum is σ = 484039512000. Its totient is φ = 86046141888.

The previous prime is 215122013291. The next prime is 215122013341. The reversal of 215122013320 is 23310221512.

It is a super-2 number, since 2×215122013320² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215122013291 and 215122013300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693381 + ... + 1815979.

It is an arithmetic number, because the mean of its divisors is an integer number (15126234750).

Almost surely, 2^215122013320 is an apocalyptic number.

215122013320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215122013320 is an abundant number, since it is smaller than the sum of its proper divisors (268917498680).

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

215122013320 is a wasteful number, since it uses less digits than its factorization.

215122013320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166477 (or 166473 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 215122013320 its reverse (23310221512), we get a palindrome (238432234832).

The spelling of 215122013320 in words is "two hundred fifteen billion, one hundred twenty-two million, thirteen thousand, three hundred twenty".