204153101121 has 16 divisors (see below), whose sum is σ = 286713181440. Its totient is φ = 128856669840.

The previous prime is 204153101063. The next prime is 204153101123. The reversal of 204153101121 is 121101351402.

It is not a de Polignac number, because 204153101121 - 2¹⁰ = 204153100097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204153101123) 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, 1050375 + ... + 1229468.

It is an arithmetic number, because the mean of its divisors is an integer number (17919573840).

Almost surely, 2^204153101121 is an apocalyptic number.

It is an amenable number.

204153101121 is a deficient number, since it is larger than the sum of its proper divisors (82560080319).

204153101121 is a wasteful number, since it uses less digits than its factorization.

204153101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281436.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 204153101121 its reverse (121101351402), we get a palindrome (325254452523).

The spelling of 204153101121 in words is "two hundred four billion, one hundred fifty-three million, one hundred one thousand, one hundred twenty-one".