20021113013 has 4 divisors (see below), whose sum is σ = 21841214208. Its totient is φ = 18201011820.

The previous prime is 20021113001. The next prime is 20021113037. The reversal of 20021113013 is 31031112002.

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 20021113013 - 2²⁰ = 20020064437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021113093) 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, 910050581 + ... + 910050602.

It is an arithmetic number, because the mean of its divisors is an integer number (5460303552).

Almost surely, 2^20021113013 is an apocalyptic number.

It is an amenable number.

20021113013 is a deficient number, since it is larger than the sum of its proper divisors (1820101195).

20021113013 is a wasteful number, since it uses less digits than its factorization.

20021113013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820101194.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20021113013 its reverse (31031112002), we get a palindrome (51052225015).

The spelling of 20021113013 in words is "twenty billion, twenty-one million, one hundred thirteen thousand, thirteen".