113221781651313 has 20 divisors (see below), whose sum is σ = 169470022696128. Its totient is φ = 75331125736920.

The previous prime is 113221781651299. The next prime is 113221781651347. The reversal of 113221781651313 is 313156187122311.

113221781651313 is a `hidden beast` number, since 1 + 1 + 3 + 2 + 2 + 178 + 165 + 1 + 313 = 666.

It is not a de Polignac number, because 113221781651313 - 2³⁰ = 113220707909489 is a prime.

It is a super-2 number, since 2×113221781651313² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (113221781611313) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1389422253 + ... + 1389503738.

Almost surely, 2^{113221781651313} is an apocalyptic number.

It is an amenable number.

113221781651313 is a deficient number, since it is larger than the sum of its proper divisors (56248241044815).

113221781651313 is an equidigital number, since it uses as much as digits as its factorization.

113221781651313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778926506 (or 2778926497 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The spelling of 113221781651313 in words is "one hundred thirteen trillion, two hundred twenty-one billion, seven hundred eighty-one million, six hundred fifty-one thousand, three hundred thirteen".