21333100313 has 8 divisors (see below), whose sum is σ = 24381688128. Its totient is φ = 18284763024.

The previous prime is 21333100309. The next prime is 21333100343. The reversal of 21333100313 is 31300133312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21333100313 - 2² = 21333100309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21333100343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185270 + ... + 277472.

It is an arithmetic number, because the mean of its divisors is an integer number (3047711016).

Almost surely, 2^21333100313 is an apocalyptic number.

It is an amenable number.

21333100313 is a deficient number, since it is larger than the sum of its proper divisors (3048587815).

21333100313 is an equidigital number, since it uses as much as digits as its factorization.

21333100313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125263.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 21333100313 its reverse (31300133312), we get a palindrome (52633233625).

The spelling of 21333100313 in words is "twenty-one billion, three hundred thirty-three million, one hundred thousand, three hundred thirteen".