12400410021 has 16 divisors (see below), whose sum is σ = 17406709440. Its totient is φ = 7830656640.

The previous prime is 12400410007. The next prime is 12400410031. The reversal of 12400410021 is 12001400421.

It is not a de Polignac number, because 12400410021 - 2⁷ = 12400409893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400410031) 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, 513801 + ... + 537393.

It is an arithmetic number, because the mean of its divisors is an integer number (1087919340).

Almost surely, 2^12400410021 is an apocalyptic number.

It is an amenable number.

12400410021 is a deficient number, since it is larger than the sum of its proper divisors (5006299419).

12400410021 is a wasteful number, since it uses less digits than its factorization.

12400410021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32836.

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

Adding to 12400410021 its reverse (12001400421), we get a palindrome (24401810442).

The spelling of 12400410021 in words is "twelve billion, four hundred million, four hundred ten thousand, twenty-one".