20201012113 has 4 divisors (see below), whose sum is σ = 20532176308. Its totient is φ = 19869847920.

The previous prime is 20201012101. The next prime is 20201012123. The reversal of 20201012113 is 31121010202.

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 3668967184 + 16532044929 = 60572^2 + 128577^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201012113 - 2³³ = 11611077521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201012093 and 20201012102.

It is not an unprimeable number, because it can be changed into a prime (20201012123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165582006 + ... + 165582127.

It is an arithmetic number, because the mean of its divisors is an integer number (5133044077).

Almost surely, 2^20201012113 is an apocalyptic number.

It is an amenable number.

20201012113 is a deficient number, since it is larger than the sum of its proper divisors (331164195).

20201012113 is an equidigital number, since it uses as much as digits as its factorization.

20201012113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331164194.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20201012113 its reverse (31121010202), we get a palindrome (51322022315).

The spelling of 20201012113 in words is "twenty billion, two hundred one million, twelve thousand, one hundred thirteen".