2131122245 has 16 divisors (see below), whose sum is σ = 2923464960. Its totient is φ = 1460949504.

The previous prime is 2131122241. The next prime is 2131122283. The reversal of 2131122245 is 5422211312.

It is not a de Polignac number, because 2131122245 - 2² = 2131122241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2131122245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131122241) 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, 197141 + ... + 207669.

It is an arithmetic number, because the mean of its divisors is an integer number (182716560).

Almost surely, 2^2131122245 is an apocalyptic number.

It is an amenable number.

2131122245 is a deficient number, since it is larger than the sum of its proper divisors (792342715).

2131122245 is a wasteful number, since it uses less digits than its factorization.

2131122245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16324.

The product of its digits is 960, while the sum is 23.

The square root of 2131122245 is about 46164.0795965868. The cubic root of 2131122245 is about 1286.8742794181.

Adding to 2131122245 its reverse (5422211312), we get a palindrome (7553333557).

The spelling of 2131122245 in words is "two billion, one hundred thirty-one million, one hundred twenty-two thousand, two hundred forty-five".