21001202012013 has 32 divisors (see below), whose sum is σ = 28674601718400. Its totient is φ = 13664800880640.

The previous prime is 21001202012003. The next prime is 21001202012041. The reversal of 21001202012013 is 31021020210012.

It is not a de Polignac number, because 21001202012013 - 2³⁰ = 21000128270189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21001202011983 and 21001202012001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001202012003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1609404313 + ... + 1609417361.

It is an arithmetic number, because the mean of its divisors is an integer number (896081303700).

Almost surely, 2^{21001202012013} is an apocalyptic number.

It is an amenable number.

21001202012013 is a deficient number, since it is larger than the sum of its proper divisors (7673399706387).

21001202012013 is a wasteful number, since it uses less digits than its factorization.

21001202012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21629.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21001202012013 its reverse (31021020210012), we get a palindrome (52022222222025).

The spelling of 21001202012013 in words is "twenty-one trillion, one billion, two hundred two million, twelve thousand, thirteen".