113420312221 has 4 divisors (see below), whose sum is σ = 117331357500. Its totient is φ = 109509266944.

The previous prime is 113420312129. The next prime is 113420312263. The reversal of 113420312221 is 122213024311.

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 26793106596 + 86627205625 = 163686^2 + 294325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113420312221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113420312192 and 113420312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113420312521) 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, 1955522596 + ... + 1955522653.

It is an arithmetic number, because the mean of its divisors is an integer number (29332839375).

Almost surely, 2^113420312221 is an apocalyptic number.

It is an amenable number.

113420312221 is a deficient number, since it is larger than the sum of its proper divisors (3911045279).

113420312221 is an equidigital number, since it uses as much as digits as its factorization.

113420312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911045278.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 113420312221 its reverse (122213024311), we get a palindrome (235633336532).

The spelling of 113420312221 in words is "one hundred thirteen billion, four hundred twenty million, three hundred twelve thousand, two hundred twenty-one".