204132221013 has 16 divisors (see below), whose sum is σ = 311074687616. Its totient is φ = 116640959040.

The previous prime is 204132221009. The next prime is 204132221023. The reversal of 204132221013 is 310122231402.

It is not a de Polignac number, because 204132221013 - 2² = 204132221009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204132221023) 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, 182703 + ... + 664563.

It is an arithmetic number, because the mean of its divisors is an integer number (19442167976).

Almost surely, 2^204132221013 is an apocalyptic number.

It is an amenable number.

204132221013 is a deficient number, since it is larger than the sum of its proper divisors (106942466603).

204132221013 is a wasteful number, since it uses less digits than its factorization.

204132221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502044.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 204132221013 its reverse (310122231402), we get a palindrome (514254452415).

The spelling of 204132221013 in words is "two hundred four billion, one hundred thirty-two million, two hundred twenty-one thousand, thirteen".