113132231221 has 8 divisors (see below), whose sum is σ = 119101584800. Its totient is φ = 107164380240.

The previous prime is 113132231213. The next prime is 113132231239. The reversal of 113132231221 is 122132231311.

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 113132231221 - 2³ = 113132231213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113132231192 and 113132231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113132271221) 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, 219426 + ... + 523843.

It is an arithmetic number, because the mean of its divisors is an integer number (14887698100).

Almost surely, 2^113132231221 is an apocalyptic number.

It is an amenable number.

113132231221 is a deficient number, since it is larger than the sum of its proper divisors (5969353579).

113132231221 is an equidigital number, since it uses as much as digits as its factorization.

113132231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751299.

The product of its digits is 432, while the sum is 22.

Adding to 113132231221 its reverse (122132231311), we get a palindrome (235264462532).

The spelling of 113132231221 in words is "one hundred thirteen billion, one hundred thirty-two million, two hundred thirty-one thousand, two hundred twenty-one".