21301011513 has 12 divisors (see below), whose sum is σ = 30906104320. Its totient is φ = 14136992856.

The previous prime is 21301011497. The next prime is 21301011527. The reversal of 21301011513 is 31511010312.

21301011513 is a `hidden beast` number, since 2 + 130 + 10 + 11 + 513 = 666.

It is not a de Polignac number, because 21301011513 - 2⁴ = 21301011497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21301011593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5304673 + ... + 5308686.

Almost surely, 2^21301011513 is an apocalyptic number.

It is an amenable number.

21301011513 is a deficient number, since it is larger than the sum of its proper divisors (9605092807).

21301011513 is a wasteful number, since it uses less digits than its factorization.

21301011513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10613588 (or 10613585 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

Adding to 21301011513 its reverse (31511010312), we get a palindrome (52812021825).

The spelling of 21301011513 in words is "twenty-one billion, three hundred one million, eleven thousand, five hundred thirteen".