21303022131233 has 4 divisors (see below), whose sum is σ = 21798441250608. Its totient is φ = 20807603011860.

The previous prime is 21303022131173. The next prime is 21303022131239. The reversal of 21303022131233 is 33213122030312.

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 21303022131233 - 2¹⁰ = 21303022130209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303022131239) 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, 247709559623 + ... + 247709559708.

It is an arithmetic number, because the mean of its divisors is an integer number (5449610312652).

Almost surely, 2^{21303022131233} is an apocalyptic number.

It is an amenable number.

21303022131233 is a deficient number, since it is larger than the sum of its proper divisors (495419119375).

21303022131233 is an equidigital number, since it uses as much as digits as its factorization.

21303022131233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495419119374.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21303022131233 its reverse (33213122030312), we get a palindrome (54516144161545).

The spelling of 21303022131233 in words is "twenty-one trillion, three hundred three billion, twenty-two million, one hundred thirty-one thousand, two hundred thirty-three".