51120132220 has 48 divisors (see below), whose sum is σ = 111077769600. Its totient is φ = 19738736640.

The previous prime is 51120132211. The next prime is 51120132247. The reversal of 51120132220 is 2223102115.

It is a super-2 number, since 2×51120132220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5173885 + ... + 5183755.

It is an arithmetic number, because the mean of its divisors is an integer number (2314120200).

Almost surely, 2^51120132220 is an apocalyptic number.

It is an amenable number.

51120132220 is an abundant number, since it is smaller than the sum of its proper divisors (59957637380).

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

51120132220 is a wasteful number, since it uses less digits than its factorization.

51120132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18838 (or 18836 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 51120132220 its reverse (2223102115), we get a palindrome (53343234335).

The spelling of 51120132220 in words is "fifty-one billion, one hundred twenty million, one hundred thirty-two thousand, two hundred twenty".