21333023201 has 4 divisors (see below), whose sum is σ = 24380597952. Its totient is φ = 18285448452.

The previous prime is 21333023197. The next prime is 21333023203. The reversal of 21333023201 is 10232033312.

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 21333023201 - 2² = 21333023197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21333023203) 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, 1523787365 + ... + 1523787378.

It is an arithmetic number, because the mean of its divisors is an integer number (6095149488).

Almost surely, 2^21333023201 is an apocalyptic number.

It is an amenable number.

21333023201 is a deficient number, since it is larger than the sum of its proper divisors (3047574751).

21333023201 is an equidigital number, since it uses as much as digits as its factorization.

21333023201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047574750.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21333023201 its reverse (10232033312), we get a palindrome (31565056513).

The spelling of 21333023201 in words is "twenty-one billion, three hundred thirty-three million, twenty-three thousand, two hundred one".