113231221113 has 8 divisors (see below), whose sum is σ = 151562413728. Its totient is φ = 75193754624.

The previous prime is 113231221067. The next prime is 113231221123. The reversal of 113231221113 is 311122132311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113231221113 - 2²¹ = 113229123961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113231221113.

It is not an unprimeable number, because it can be changed into a prime (113231221123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73430631 + ... + 73432172.

It is an arithmetic number, because the mean of its divisors is an integer number (18945301716).

Almost surely, 2^113231221113 is an apocalyptic number.

It is an amenable number.

113231221113 is a deficient number, since it is larger than the sum of its proper divisors (38331192615).

113231221113 is a wasteful number, since it uses less digits than its factorization.

113231221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146863063.

The product of its digits is 216, while the sum is 21.

Adding to 113231221113 its reverse (311122132311), we get a palindrome (424353353424).

The spelling of 113231221113 in words is "one hundred thirteen billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred thirteen".