21223231001303 has 4 divisors (see below), whose sum is σ = 21284042551800. Its totient is φ = 21162419450808.

The previous prime is 21223231001299. The next prime is 21223231001309. The reversal of 21223231001303 is 30310013232212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21223231001303 - 2² = 21223231001299 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 (21223231001309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30405774725 + ... + 30405775422.

It is an arithmetic number, because the mean of its divisors is an integer number (5321010637950).

Almost surely, 2^{21223231001303} is an apocalyptic number.

21223231001303 is a deficient number, since it is larger than the sum of its proper divisors (60811550497).

21223231001303 is an equidigital number, since it uses as much as digits as its factorization.

21223231001303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60811550496.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21223231001303 its reverse (30310013232212), we get a palindrome (51533244233515).

The spelling of 21223231001303 in words is "twenty-one trillion, two hundred twenty-three billion, two hundred thirty-one million, one thousand, three hundred three".