113121240111 has 12 divisors (see below), whose sum is σ = 178251651240. Its totient is φ = 68558327280.

The previous prime is 113121240109. The next prime is 113121240131. The reversal of 113121240111 is 111042121311.

113121240111 is a `hidden beast` number, since 1 + 1 + 312 + 1 + 240 + 111 = 666.

It is not a de Polignac number, because 113121240111 - 2¹ = 113121240109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121240131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 571319296 + ... + 571319493.

It is an arithmetic number, because the mean of its divisors is an integer number (14854304270).

Almost surely, 2^113121240111 is an apocalyptic number.

113121240111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113121240111 is a deficient number, since it is larger than the sum of its proper divisors (65130411129).

113121240111 is a wasteful number, since it uses less digits than its factorization.

113121240111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142638806 (or 1142638803 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 113121240111 its reverse (111042121311), we get a palindrome (224163361422).

The spelling of 113121240111 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred forty thousand, one hundred eleven".