10204403021 has 4 divisors (see below), whose sum is σ = 10533577344. Its totient is φ = 9875228700.

The previous prime is 10204402991. The next prime is 10204403047. The reversal of 10204403021 is 12030440201.

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 10204403021 - 2²² = 10200208717 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 (10204403821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164587115 + ... + 164587176.

It is an arithmetic number, because the mean of its divisors is an integer number (2633394336).

Almost surely, 2^10204403021 is an apocalyptic number.

It is an amenable number.

10204403021 is a deficient number, since it is larger than the sum of its proper divisors (329174323).

10204403021 is an equidigital number, since it uses as much as digits as its factorization.

10204403021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329174322.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 10204403021 its reverse (12030440201), we get a palindrome (22234843222).

The spelling of 10204403021 in words is "ten billion, two hundred four million, four hundred three thousand, twenty-one".