20112321113 has 4 divisors (see below), whose sum is σ = 20112637860. Its totient is φ = 20112004368.

The previous prime is 20112321101. The next prime is 20112321167. The reversal of 20112321113 is 31112321102.

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 10863267529 + 9249053584 = 104227^2 + 96172^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112321113 - 2⁶ = 20112321049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112321091 and 20112321100.

It is not an unprimeable number, because it can be changed into a prime (20112327113) 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, 26558 + ... + 202311.

It is an arithmetic number, because the mean of its divisors is an integer number (5028159465).

Almost surely, 2^20112321113 is an apocalyptic number.

It is an amenable number.

20112321113 is a deficient number, since it is larger than the sum of its proper divisors (316747).

20112321113 is an equidigital number, since it uses as much as digits as its factorization.

20112321113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316746.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20112321113 its reverse (31112321102), we get a palindrome (51224642215).

The spelling of 20112321113 in words is "twenty billion, one hundred twelve million, three hundred twenty-one thousand, one hundred thirteen".