10331402421 has 4 divisors (see below), whose sum is σ = 13775203232. Its totient is φ = 6887601612.

The previous prime is 10331402371. The next prime is 10331402443. The reversal of 10331402421 is 12420413301.

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 not a de Polignac number, because 10331402421 - 2⁶ = 10331402357 is a prime.

It is a super-2 number, since 2×10331402421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10331402021) 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, 1721900401 + ... + 1721900406.

It is an arithmetic number, because the mean of its divisors is an integer number (3443800808).

Almost surely, 2^10331402421 is an apocalyptic number.

It is an amenable number.

10331402421 is a deficient number, since it is larger than the sum of its proper divisors (3443800811).

10331402421 is an equidigital number, since it uses as much as digits as its factorization.

10331402421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443800810.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 10331402421 its reverse (12420413301), we get a palindrome (22751815722).

The spelling of 10331402421 in words is "ten billion, three hundred thirty-one million, four hundred two thousand, four hundred twenty-one".