204220620255131 has 16 divisors (see below), whose sum is σ = 213745825666560. Its totient is φ = 194749656393600.

The previous prime is 204220620255101. The next prime is 204220620255163. The reversal of 204220620255131 is 131552026022402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 204220620255131 - 2⁴⁶ = 133851876077467 is a prime.

It is a super-2 number, since 2×204220620255131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204220620255091 and 204220620255100.

It is not an unprimeable number, because it can be changed into a prime (204220620255101) 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, 17645171 + ... + 26828963.

It is an arithmetic number, because the mean of its divisors is an integer number (13359114104160).

Almost surely, 2^{204220620255131} is an apocalyptic number.

204220620255131 is a deficient number, since it is larger than the sum of its proper divisors (9525205411429).

204220620255131 is a wasteful number, since it uses less digits than its factorization.

204220620255131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9186746.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 204220620255131 its reverse (131552026022402), we get a palindrome (335772646277533).

The spelling of 204220620255131 in words is "two hundred four trillion, two hundred twenty billion, six hundred twenty million, two hundred fifty-five thousand, one hundred thirty-one".