10400121232 has 40 divisors (see below), whose sum is σ = 21042403200. Its totient is φ = 4970169600.

The previous prime is 10400121157. The next prime is 10400121233. The reversal of 10400121232 is 23212100401.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (10400121233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504732 + ... + 524932.

It is an arithmetic number, because the mean of its divisors is an integer number (526060080).

Almost surely, 2^10400121232 is an apocalyptic number.

It is an amenable number.

10400121232 is an abundant number, since it is smaller than the sum of its proper divisors (10642281968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10400121232 is a wasteful number, since it uses less digits than its factorization.

10400121232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21631 (or 21625 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 10400121232 its reverse (23212100401), we get a palindrome (33612221633).

The spelling of 10400121232 in words is "ten billion, four hundred million, one hundred twenty-one thousand, two hundred thirty-two".