10400204121 has 16 divisors (see below), whose sum is σ = 14764680000. Its totient is φ = 6489156608.

The previous prime is 10400204093. The next prime is 10400204183. The reversal of 10400204121 is 12140200401.

It is a cyclic number.

It is not a de Polignac number, because 10400204121 - 2²² = 10396009817 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10400204121.

It is not an unprimeable number, because it can be changed into a prime (10400204921) 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, 560496 + ... + 578753.

It is an arithmetic number, because the mean of its divisors is an integer number (922792500).

Almost surely, 2^10400204121 is an apocalyptic number.

It is an amenable number.

10400204121 is a deficient number, since it is larger than the sum of its proper divisors (4364475879).

10400204121 is a wasteful number, since it uses less digits than its factorization.

10400204121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139448.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10400204121 its reverse (12140200401), we get a palindrome (22540404522).

The spelling of 10400204121 in words is "ten billion, four hundred million, two hundred four thousand, one hundred twenty-one".