113020111021 has 4 divisors (see below), whose sum is σ = 113102428572. Its totient is φ = 112937793472.

The previous prime is 113020111019. The next prime is 113020111037. The reversal of 113020111021 is 120111020311.

It is a happy number.

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 60767180100 + 52252930921 = 246510^2 + 228589^2 .

It is a cyclic number.

It is not a de Polignac number, because 113020111021 - 2¹ = 113020111019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113020110992 and 113020111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113020111091) 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, 41156716 + ... + 41159461.

It is an arithmetic number, because the mean of its divisors is an integer number (28275607143).

Almost surely, 2^113020111021 is an apocalyptic number.

It is an amenable number.

113020111021 is a deficient number, since it is larger than the sum of its proper divisors (82317551).

113020111021 is an equidigital number, since it uses as much as digits as its factorization.

113020111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82317550.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 113020111021 its reverse (120111020311), we get a palindrome (233131131332).

The spelling of 113020111021 in words is "one hundred thirteen billion, twenty million, one hundred eleven thousand, twenty-one".