204402220131 has 16 divisors (see below), whose sum is σ = 277281889920. Its totient is φ = 133897454400.

The previous prime is 204402220109. The next prime is 204402220171. The reversal of 204402220131 is 131022204402.

It is not a de Polignac number, because 204402220131 - 2³⁰ = 203328478307 is a prime.

It is a super-2 number, since 2×204402220131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204402220098 and 204402220107.

It is not an unprimeable number, because it can be changed into a prime (204402220171) 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, 127831 + ... + 652031.

It is an arithmetic number, because the mean of its divisors is an integer number (17330118120).

Almost surely, 2^204402220131 is an apocalyptic number.

204402220131 is a deficient number, since it is larger than the sum of its proper divisors (72879669789).

204402220131 is a wasteful number, since it uses less digits than its factorization.

204402220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526466.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 204402220131 its reverse (131022204402), we get a palindrome (335424424533).

The spelling of 204402220131 in words is "two hundred four billion, four hundred two million, two hundred twenty thousand, one hundred thirty-one".