113021313221 has 4 divisors (see below), whose sum is σ = 113027447244. Its totient is φ = 113015179200.

The previous prime is 113021313217. The next prime is 113021313233. The reversal of 113021313221 is 122313120311.

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 109901532196 + 3119781025 = 331514^2 + 55855^2 .

It is a cyclic number.

It is not a de Polignac number, because 113021313221 - 2² = 113021313217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113021313193 and 113021313202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113021313281) 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, 3039290 + ... + 3076251.

It is an arithmetic number, because the mean of its divisors is an integer number (28256861811).

Almost surely, 2^113021313221 is an apocalyptic number.

It is an amenable number.

113021313221 is a deficient number, since it is larger than the sum of its proper divisors (6134023).

113021313221 is an equidigital number, since it uses as much as digits as its factorization.

113021313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134022.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 113021313221 its reverse (122313120311), we get a palindrome (235334433532).

The spelling of 113021313221 in words is "one hundred thirteen billion, twenty-one million, three hundred thirteen thousand, two hundred twenty-one".