20213111013 has 4 divisors (see below), whose sum is σ = 26950814688. Its totient is φ = 13475407340.

The previous prime is 20213110997. The next prime is 20213111021. The reversal of 20213111013 is 31011131202.

It is a happy number.

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 20213111013 - 2⁴ = 20213110997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20213110983 and 20213111001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213111033) 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, 3368851833 + ... + 3368851838.

It is an arithmetic number, because the mean of its divisors is an integer number (6737703672).

Almost surely, 2^20213111013 is an apocalyptic number.

It is an amenable number.

20213111013 is a deficient number, since it is larger than the sum of its proper divisors (6737703675).

20213111013 is an equidigital number, since it uses as much as digits as its factorization.

20213111013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737703674.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20213111013 its reverse (31011131202), we get a palindrome (51224242215).

The spelling of 20213111013 in words is "twenty billion, two hundred thirteen million, one hundred eleven thousand, thirteen".