113220040021 has 16 divisors (see below), whose sum is σ = 125437984128. Its totient is φ = 101327262400.

The previous prime is 113220040013. The next prime is 113220040027. The reversal of 113220040021 is 120040022311.

It is a cyclic number.

It is not a de Polignac number, because 113220040021 - 2³ = 113220040013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113220039977 and 113220040004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113220040027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421671 + ... + 635803.

It is an arithmetic number, because the mean of its divisors is an integer number (7839874008).

Almost surely, 2^113220040021 is an apocalyptic number.

113220040021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113220040021 is a deficient number, since it is larger than the sum of its proper divisors (12217944107).

113220040021 is a wasteful number, since it uses less digits than its factorization.

113220040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214892.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 113220040021 its reverse (120040022311), we get a palindrome (233260062332).

The spelling of 113220040021 in words is "one hundred thirteen billion, two hundred twenty million, forty thousand, twenty-one".