21321313300003 has 4 divisors (see below), whose sum is σ = 21326477100040. Its totient is φ = 21316149499968.

The previous prime is 21321313299967. The next prime is 21321313300013. The reversal of 21321313300003 is 30000331312312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21321313300003 - 2²⁹ = 21320776429091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21321313300013) 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 3 ways as a sum of consecutive naturals, for example, 2581893825 + ... + 2581902082.

It is an arithmetic number, because the mean of its divisors is an integer number (5331619275010).

Almost surely, 2^{21321313300003} is an apocalyptic number.

21321313300003 is a deficient number, since it is larger than the sum of its proper divisors (5163800037).

21321313300003 is an equidigital number, since it uses as much as digits as its factorization.

21321313300003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163800036.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21321313300003 its reverse (30000331312312), we get a palindrome (51321644612315).

The spelling of 21321313300003 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred thirteen million, three hundred thousand, three".