21321102003313 has 16 divisors (see below), whose sum is σ = 24587653749120. Its totient is φ = 18110408461056.

The previous prime is 21321102003301. The next prime is 21321102003329. The reversal of 21321102003313 is 31330020112312.

It is a cyclic number.

It is not a de Polignac number, because 21321102003313 - 2⁵ = 21321102003281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21321102003713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28302808 + ... + 29046361.

It is an arithmetic number, because the mean of its divisors is an integer number (1536728359320).

Almost surely, 2^{21321102003313} is an apocalyptic number.

It is an amenable number.

21321102003313 is a deficient number, since it is larger than the sum of its proper divisors (3266551745807).

21321102003313 is a wasteful number, since it uses less digits than its factorization.

21321102003313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57349656.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21321102003313 its reverse (31330020112312), we get a palindrome (52651122115625).

The spelling of 21321102003313 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred two million, three thousand, three hundred thirteen".