113121331211 has 16 divisors (see below), whose sum is σ = 134560032000. Its totient is φ = 93043284768.

The previous prime is 113121331199. The next prime is 113121331229. The reversal of 113121331211 is 112133121311.

It is a de Polignac number, because none of the positive numbers 2^k-113121331211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113121331811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1676261 + ... + 1742438.

It is an arithmetic number, because the mean of its divisors is an integer number (8410002000).

Almost surely, 2^113121331211 is an apocalyptic number.

113121331211 is a deficient number, since it is larger than the sum of its proper divisors (21438700789).

113121331211 is a wasteful number, since it uses less digits than its factorization.

113121331211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418898.

The product of its digits is 108, while the sum is 20.

Adding to 113121331211 its reverse (112133121311), we get a palindrome (225254452522).

The spelling of 113121331211 in words is "one hundred thirteen billion, one hundred twenty-one million, three hundred thirty-one thousand, two hundred eleven".