113212111 has 8 divisors (see below), whose sum is σ = 117707184. Its totient is φ = 108799680.

The previous prime is 113212109. The next prime is 113212133. The reversal of 113212111 is 111212311.

It is a happy number.

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 113212111 - 2¹ = 113212109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113212091 and 113212100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113212181) 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, 17860 + ... + 23353.

It is an arithmetic number, because the mean of its divisors is an integer number (14713398).

Almost surely, 2^113212111 is an apocalyptic number.

113212111 is a deficient number, since it is larger than the sum of its proper divisors (4495073).

113212111 is an equidigital number, since it uses as much as digits as its factorization.

113212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41321.

The product of its digits is 12, while the sum is 13.

The square root of 113212111 is about 10640.1179974660. The cubic root of 113212111 is about 483.7611219614.

Adding to 113212111 its reverse (111212311), we get a palindrome (224424422).

The spelling of 113212111 in words is "one hundred thirteen million, two hundred twelve thousand, one hundred eleven".