2131122204 has 48 divisors (see below), whose sum is σ = 5582119200. Its totient is φ = 703047168.

The previous prime is 2131122199. The next prime is 2131122223. The reversal of 2131122204 is 4022211312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 91239 + ... + 112190.

It is an arithmetic number, because the mean of its divisors is an integer number (116294150).

Almost surely, 2^2131122204 is an apocalyptic number.

It is an amenable number.

2131122204 is an abundant number, since it is smaller than the sum of its proper divisors (3450996996).

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

2131122204 is a wasteful number, since it uses less digits than its factorization.

2131122204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203539 (or 203531 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2131122204 is about 46164.0791525186. The cubic root of 2131122204 is about 1286.8742711655.

Adding to 2131122204 its reverse (4022211312), we get a palindrome (6153333516).

The spelling of 2131122204 in words is "two billion, one hundred thirty-one million, one hundred twenty-two thousand, two hundred four".