113221322231 has 4 divisors (see below), whose sum is σ = 113971132464. Its totient is φ = 112471512000.

The previous prime is 113221322219. The next prime is 113221322251. The reversal of 113221322231 is 132223122311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113221322231 is a prime.

It is a super-2 number, since 2×113221322231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113221322197 and 113221322206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113221322251) 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 3 ways as a sum of consecutive naturals, for example, 374904890 + ... + 374905191.

It is an arithmetic number, because the mean of its divisors is an integer number (28492783116).

Almost surely, 2^113221322231 is an apocalyptic number.

113221322231 is a deficient number, since it is larger than the sum of its proper divisors (749810233).

113221322231 is an equidigital number, since it uses as much as digits as its factorization.

113221322231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749810232.

The product of its digits is 864, while the sum is 23.

Adding to 113221322231 its reverse (132223122311), we get a palindrome (245444444542).

The spelling of 113221322231 in words is "one hundred thirteen billion, two hundred twenty-one million, three hundred twenty-two thousand, two hundred thirty-one".