10021044421 has 4 divisors (see below), whose sum is σ = 10021266112. Its totient is φ = 10020822732.

The previous prime is 10021044403. The next prime is 10021044427. The reversal of 10021044421 is 12444012001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10021044421 - 2⁵ = 10021044389 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 (10021044427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15975 + ... + 142468.

It is an arithmetic number, because the mean of its divisors is an integer number (2505316528).

Almost surely, 2^10021044421 is an apocalyptic number.

It is an amenable number.

10021044421 is a deficient number, since it is larger than the sum of its proper divisors (221691).

10021044421 is an equidigital number, since it uses as much as digits as its factorization.

10021044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221690.

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

Adding to 10021044421 its reverse (12444012001), we get a palindrome (22465056422).

The spelling of 10021044421 in words is "ten billion, twenty-one million, forty-four thousand, four hundred twenty-one".