204130132521 has 64 divisors (see below), whose sum is σ = 318706569216. Its totient is φ = 113817312000.

The previous prime is 204130132489. The next prime is 204130132529. The reversal of 204130132521 is 125231031402.

It is not a de Polignac number, because 204130132521 - 2⁵ = 204130132489 is a prime.

It is a super-2 number, since 2×204130132521² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204130132491 and 204130132500.

It is not an unprimeable number, because it can be changed into a prime (204130132529) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85731751 + ... + 85734131.

It is an arithmetic number, because the mean of its divisors is an integer number (4979790144).

Almost surely, 2^204130132521 is an apocalyptic number.

204130132521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

204130132521 is a deficient number, since it is larger than the sum of its proper divisors (114576436695).

204130132521 is a wasteful number, since it uses less digits than its factorization.

204130132521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 204130132521 its reverse (125231031402), we get a palindrome (329361163923).

The spelling of 204130132521 in words is "two hundred four billion, one hundred thirty million, one hundred thirty-two thousand, five hundred twenty-one".