20211313013 has 4 divisors (see below), whose sum is σ = 20312877600. Its totient is φ = 20109748428.

The previous prime is 20211312991. The next prime is 20211313021. The reversal of 20211313013 is 31031311202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20211313013 - 2³⁴ = 3031443829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211312982 and 20211313000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211313613) 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, 50781995 + ... + 50782392.

It is an arithmetic number, because the mean of its divisors is an integer number (5078219400).

Almost surely, 2^20211313013 is an apocalyptic number.

It is an amenable number.

20211313013 is a deficient number, since it is larger than the sum of its proper divisors (101564587).

20211313013 is a wasteful number, since it uses less digits than its factorization.

20211313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101564586.

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

Adding to 20211313013 its reverse (31031311202), we get a palindrome (51242624215).

The spelling of 20211313013 in words is "twenty billion, two hundred eleven million, three hundred thirteen thousand, thirteen".