113351221331 has 4 divisors (see below), whose sum is σ = 113782214832. Its totient is φ = 112920227832.

The previous prime is 113351221303. The next prime is 113351221349. The reversal of 113351221331 is 133122153311.

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-113351221331 is a prime.

It is a super-2 number, since 2×113351221331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113351221331.

It is not an unprimeable number, because it can be changed into a prime (113351227331) 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, 215496356 + ... + 215496881.

It is an arithmetic number, because the mean of its divisors is an integer number (28445553708).

Almost surely, 2^113351221331 is an apocalyptic number.

113351221331 is a deficient number, since it is larger than the sum of its proper divisors (430993501).

113351221331 is an equidigital number, since it uses as much as digits as its factorization.

113351221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430993500.

The product of its digits is 1620, while the sum is 26.

Adding to 113351221331 its reverse (133122153311), we get a palindrome (246473374642).

The spelling of 113351221331 in words is "one hundred thirteen billion, three hundred fifty-one million, two hundred twenty-one thousand, three hundred thirty-one".