21002323300013 has 4 divisors (see below), whose sum is σ = 22911625418208. Its totient is φ = 19093021181820.

The previous prime is 21002323299977. The next prime is 21002323300027. The reversal of 21002323300013 is 31000332320012.

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 21002323300013 - 2¹² = 21002323295917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002323300073) 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, 954651059081 + ... + 954651059102.

It is an arithmetic number, because the mean of its divisors is an integer number (5727906354552).

Almost surely, 2^{21002323300013} is an apocalyptic number.

It is an amenable number.

21002323300013 is a deficient number, since it is larger than the sum of its proper divisors (1909302118195).

21002323300013 is a wasteful number, since it uses less digits than its factorization.

21002323300013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909302118194.

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

Adding to 21002323300013 its reverse (31000332320012), we get a palindrome (52002655620025).

The spelling of 21002323300013 in words is "twenty-one trillion, two billion, three hundred twenty-three million, three hundred thousand, thirteen".