113312121111 has 48 divisors (see below), whose sum is σ = 191839572288. Its totient is φ = 63097228800.

The previous prime is 113312121061. The next prime is 113312121133. The reversal of 113312121111 is 111121213311.

113312121111 is a `hidden beast` number, since 11 + 331 + 212 + 1 + 111 = 666.

It is not a de Polignac number, because 113312121111 - 2⁶ = 113312121047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113312121191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2240281 + ... + 2290301.

It is an arithmetic number, because the mean of its divisors is an integer number (3996657756).

Almost surely, 2^113312121111 is an apocalyptic number.

113312121111 is a deficient number, since it is larger than the sum of its proper divisors (78527451177).

113312121111 is a wasteful number, since it uses less digits than its factorization.

113312121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50952 (or 50949 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

Adding to 113312121111 its reverse (111121213311), we get a palindrome (224433334422).

The spelling of 113312121111 in words is "one hundred thirteen billion, three hundred twelve million, one hundred twenty-one thousand, one hundred eleven".