10044021421 has 24 divisors (see below), whose sum is σ = 12079812096. Its totient is φ = 8318288160.

The previous prime is 10044021373. The next prime is 10044021431. The reversal of 10044021421 is 12412044001.

It is not a de Polignac number, because 10044021421 - 2¹⁷ = 10043890349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10044021431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1023480 + ... + 1033246.

It is an arithmetic number, because the mean of its divisors is an integer number (503325504).

Almost surely, 2^10044021421 is an apocalyptic number.

It is an amenable number.

10044021421 is a deficient number, since it is larger than the sum of its proper divisors (2035790675).

10044021421 is an equidigital number, since it uses as much as digits as its factorization.

10044021421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10489 (or 10482 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10044021421 its reverse (12412044001), we get a palindrome (22456065422).

The spelling of 10044021421 in words is "ten billion, forty-four million, twenty-one thousand, four hundred twenty-one".