21122301313 has 4 divisors (see below), whose sum is σ = 21480306480. Its totient is φ = 20764296148.

The previous prime is 21122301283. The next prime is 21122301323. The reversal of 21122301313 is 31310322112.

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 21122301313 - 2²⁵ = 21088746881 is a prime.

It is a super-2 number, since 2×21122301313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122301323) 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, 179002495 + ... + 179002612.

It is an arithmetic number, because the mean of its divisors is an integer number (5370076620).

Almost surely, 2^21122301313 is an apocalyptic number.

It is an amenable number.

21122301313 is a deficient number, since it is larger than the sum of its proper divisors (358005167).

21122301313 is an equidigital number, since it uses as much as digits as its factorization.

21122301313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358005166.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21122301313 its reverse (31310322112), we get a palindrome (52432623425).

The spelling of 21122301313 in words is "twenty-one billion, one hundred twenty-two million, three hundred one thousand, three hundred thirteen".