21333102423 has 32 divisors (see below), whose sum is σ = 29591654400. Its totient is φ = 13661264736.

The previous prime is 21333102419. The next prime is 21333102433. The reversal of 21333102423 is 32420133312.

It is not a de Polignac number, because 21333102423 - 2² = 21333102419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21333102393 and 21333102402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333102433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1913058 + ... + 1924176.

It is an arithmetic number, because the mean of its divisors is an integer number (924739200).

Almost surely, 2^21333102423 is an apocalyptic number.

21333102423 is a deficient number, since it is larger than the sum of its proper divisors (8258551977).

21333102423 is a wasteful number, since it uses less digits than its factorization.

21333102423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11411.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21333102423 its reverse (32420133312), we get a palindrome (53753235735).

The spelling of 21333102423 in words is "twenty-one billion, three hundred thirty-three million, one hundred two thousand, four hundred twenty-three".