113212121222231 has 8 divisors (see below), whose sum is σ = 119752666643040. Its totient is φ = 106806432408192.

The previous prime is 113212121222227. The next prime is 113212121222261. The reversal of 113212121222231 is 132222121212311.

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 113212121222231 - 2² = 113212121222227 is a prime.

It is a super-2 number, since 2×113212121222231² (a number of 29 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 113212121222231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113212121222201) 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, 33714149966 + ... + 33714153323.

It is an arithmetic number, because the mean of its divisors is an integer number (14969083330380).

Almost surely, 2^{113212121222231} is an apocalyptic number.

113212121222231 is a deficient number, since it is larger than the sum of its proper divisors (6540545420809).

113212121222231 is an equidigital number, since it uses as much as digits as its factorization.

113212121222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67428303385.

The product of its digits is 1152, while the sum is 26.

Adding to 113212121222231 its reverse (132222121212311), we get a palindrome (245434242434542).

The spelling of 113212121222231 in words is "one hundred thirteen trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred thirty-one".