21202313013 has 12 divisors (see below), whose sum is σ = 35000643808. Its totient is φ = 12115607400.

The previous prime is 21202313003. The next prime is 21202313023. The reversal of 21202313013 is 31031320212.

It is an interprime number because it is at equal distance from previous prime (21202313003) and next prime (21202313023).

It is not a de Polignac number, because 21202313013 - 2¹² = 21202308917 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 (21202313003) 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, 168272263 + ... + 168272388.

Almost surely, 2^21202313013 is an apocalyptic number.

It is an amenable number.

21202313013 is a deficient number, since it is larger than the sum of its proper divisors (13798330795).

21202313013 is a wasteful number, since it uses less digits than its factorization.

21202313013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336544664 (or 336544661 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21202313013 its reverse (31031320212), we get a palindrome (52233633225).

The spelling of 21202313013 in words is "twenty-one billion, two hundred two million, three hundred thirteen thousand, thirteen".