21301322313 has 12 divisors (see below), whose sum is σ = 29975269488. Its totient is φ = 13453466040.

The previous prime is 21301322293. The next prime is 21301322321. The reversal of 21301322313 is 31322310312.

It is not a de Polignac number, because 21301322313 - 2⁶ = 21301322249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21301322313.

It is not an unprimeable number, because it can be changed into a prime (21301322333) 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, 9833323 + ... + 9835488.

It is an arithmetic number, because the mean of its divisors is an integer number (2497939124).

Almost surely, 2^21301322313 is an apocalyptic number.

It is an amenable number.

21301322313 is a deficient number, since it is larger than the sum of its proper divisors (8673947175).

21301322313 is a wasteful number, since it uses less digits than its factorization.

21301322313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19668852 (or 19668833 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21301322313 its reverse (31322310312), we get a palindrome (52623632625).

The spelling of 21301322313 in words is "twenty-one billion, three hundred one million, three hundred twenty-two thousand, three hundred thirteen".