20213111330113 has 4 divisors (see below), whose sum is σ = 21767966047828. Its totient is φ = 18658256612400.

The previous prime is 20213111329979. The next prime is 20213111330143. The reversal of 20213111330113 is 31103311131202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2869151536449 + 17343959793664 = 1693857^2 + 4164608^2 .

It is a cyclic number.

It is not a de Polignac number, because 20213111330113 - 2⁹ = 20213111329601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20213111330143) 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, 777427358838 + ... + 777427358863.

It is an arithmetic number, because the mean of its divisors is an integer number (5441991511957).

Almost surely, 2^{20213111330113} is an apocalyptic number.

It is an amenable number.

20213111330113 is a deficient number, since it is larger than the sum of its proper divisors (1554854717715).

20213111330113 is a wasteful number, since it uses less digits than its factorization.

20213111330113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554854717714.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 20213111330113 its reverse (31103311131202), we get a palindrome (51316422461315).

The spelling of 20213111330113 in words is "twenty trillion, two hundred thirteen billion, one hundred eleven million, three hundred thirty thousand, one hundred thirteen".