130031021220 has 48 divisors (see below), whose sum is σ = 364159369728. Its totient is φ = 34668033280.

The previous prime is 130031021209. The next prime is 130031021227. The reversal of 130031021220 is 22120130031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 130031021220.

It is not an unprimeable number, because it can be changed into a prime (130031021227) 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, 91597 + ... + 518123.

It is an arithmetic number, because the mean of its divisors is an integer number (7586653536).

Almost surely, 2^130031021220 is an apocalyptic number.

130031021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130031021220 is an abundant number, since it is smaller than the sum of its proper divisors (234128348508).

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

130031021220 is a wasteful number, since it uses less digits than its factorization.

130031021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431620 (or 431618 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 130031021220 its reverse (22120130031), we get a palindrome (152151151251).

The spelling of 130031021220 in words is "one hundred thirty billion, thirty-one million, twenty-one thousand, two hundred twenty".