21012210310013 has 8 divisors (see below), whose sum is σ = 22642938106656. Its totient is φ = 19383540217200.

The previous prime is 21012210310001. The next prime is 21012210310027. The reversal of 21012210310013 is 31001301221012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21012210310013 - 2²⁰ = 21012209261437 is a prime.

It is a super-2 number, since 2×21012210310013² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21012210309973 and 21012210310000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012210310033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514404743 + ... + 514445588.

It is an arithmetic number, because the mean of its divisors is an integer number (2830367263332).

Almost surely, 2^{21012210310013} is an apocalyptic number.

It is an amenable number.

21012210310013 is a deficient number, since it is larger than the sum of its proper divisors (1630727796643).

21012210310013 is a wasteful number, since it uses less digits than its factorization.

21012210310013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028851915.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21012210310013 its reverse (31001301221012), we get a palindrome (52013511531025).

The spelling of 21012210310013 in words is "twenty-one trillion, twelve billion, two hundred ten million, three hundred ten thousand, thirteen".