21333000020313 has 4 divisors (see below), whose sum is σ = 28444000027088. Its totient is φ = 14222000013540.

The previous prime is 21333000020303. The next prime is 21333000020327. The reversal of 21333000020313 is 31302000033312.

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 not a de Polignac number, because 21333000020313 - 2⁵ = 21333000020281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21333000020313.

It is not an unprimeable number, because it can be changed into a prime (21333000020303) 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, 3555500003383 + ... + 3555500003388.

It is an arithmetic number, because the mean of its divisors is an integer number (7111000006772).

Almost surely, 2^{21333000020313} is an apocalyptic number.

It is an amenable number.

21333000020313 is a deficient number, since it is larger than the sum of its proper divisors (7111000006775).

21333000020313 is an equidigital number, since it uses as much as digits as its factorization.

21333000020313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7111000006774.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21333000020313 its reverse (31302000033312), we get a palindrome (52635000053625).

The spelling of 21333000020313 in words is "twenty-one trillion, three hundred thirty-three billion, twenty thousand, three hundred thirteen".