21333002321233 has 4 divisors (see below), whose sum is σ = 21349078435840. Its totient is φ = 21316926206628.

The previous prime is 21333002321203. The next prime is 21333002321243. The reversal of 21333002321233 is 33212320033312.

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 21333002321233 - 2²⁵ = 21332968766801 is a prime.

It is a super-2 number, since 2×21333002321233² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21333002321203) 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, 8038055313 + ... + 8038057966.

It is an arithmetic number, because the mean of its divisors is an integer number (5337269608960).

Almost surely, 2^{21333002321233} is an apocalyptic number.

It is an amenable number.

21333002321233 is a deficient number, since it is larger than the sum of its proper divisors (16076114607).

21333002321233 is a wasteful number, since it uses less digits than its factorization.

21333002321233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16076114606.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 21333002321233 its reverse (33212320033312), we get a palindrome (54545322354545).

The spelling of 21333002321233 in words is "twenty-one trillion, three hundred thirty-three billion, two million, three hundred twenty-one thousand, two hundred thirty-three".