2131202220 has 96 divisors (see below), whose sum is σ = 7004218368. Its totient is φ = 473962752.

The previous prime is 2131202219. The next prime is 2131202231. The reversal of 2131202220 is 222021312.

It is a happy number.

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 2131202220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53032 + ... + 84111.

It is an arithmetic number, because the mean of its divisors is an integer number (72960608).

Almost surely, 2^2131202220 is an apocalyptic number.

2131202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131202220 is an abundant number, since it is smaller than the sum of its proper divisors (4873016148).

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

2131202220 is a wasteful number, since it uses less digits than its factorization.

2131202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137199 (or 137197 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2131202220 is about 46164.9457922350. The cubic root of 2131202220 is about 1286.8903768027.

Adding to 2131202220 its reverse (222021312), we get a palindrome (2353223532).

The spelling of 2131202220 in words is "two billion, one hundred thirty-one million, two hundred two thousand, two hundred twenty".