21320010301013 has 4 divisors (see below), whose sum is σ = 21539804221740. Its totient is φ = 21100216380288.

The previous prime is 21320010300991. The next prime is 21320010301039. The reversal of 21320010301013 is 31010301002312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16616564100964 + 4703446200049 = 4076342^2 + 2168743^2 .

It is a cyclic number.

It is not a de Polignac number, because 21320010301013 - 2¹² = 21320010296917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21320010300982 and 21320010301000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320010301813) 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, 109896960218 + ... + 109896960411.

It is an arithmetic number, because the mean of its divisors is an integer number (5384951055435).

Almost surely, 2^{21320010301013} is an apocalyptic number.

It is an amenable number.

21320010301013 is a deficient number, since it is larger than the sum of its proper divisors (219793920727).

21320010301013 is an equidigital number, since it uses as much as digits as its factorization.

21320010301013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219793920726.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21320010301013 its reverse (31010301002312), we get a palindrome (52330311303325).

The spelling of 21320010301013 in words is "twenty-one trillion, three hundred twenty billion, ten million, three hundred one thousand, thirteen".