21014411313 has 24 divisors (see below), whose sum is σ = 32644775520. Its totient is φ = 11989447680.

The previous prime is 21014411303. The next prime is 21014411321. The reversal of 21014411313 is 31311441012.

It is not a de Polignac number, because 21014411313 - 2⁵ = 21014411281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21014411313.

It is not an unprimeable number, because it can be changed into a prime (21014411303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17283 + ... + 205736.

It is an arithmetic number, because the mean of its divisors is an integer number (1360198980).

Almost surely, 2^21014411313 is an apocalyptic number.

It is an amenable number.

21014411313 is a deficient number, since it is larger than the sum of its proper divisors (11630364207).

21014411313 is a wasteful number, since it uses less digits than its factorization.

21014411313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223677 (or 223670 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21014411313 its reverse (31311441012), we get a palindrome (52325852325).

The spelling of 21014411313 in words is "twenty-one billion, fourteen million, four hundred eleven thousand, three hundred thirteen".