111231340122 has 16 divisors (see below), whose sum is σ = 254243063232. Its totient is φ = 31780382880.

The previous prime is 111231340117. The next prime is 111231340133. The reversal of 111231340122 is 221043132111.

It is a super-2 number, since 2×111231340122² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1324182579 + ... + 1324182662.

It is an arithmetic number, because the mean of its divisors is an integer number (15890191452).

Almost surely, 2^111231340122 is an apocalyptic number.

111231340122 is an abundant number, since it is smaller than the sum of its proper divisors (143011723110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111231340122 is a wasteful number, since it uses less digits than its factorization.

111231340122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648365253.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 111231340122 its reverse (221043132111), we get a palindrome (332274472233).

The spelling of 111231340122 in words is "one hundred eleven billion, two hundred thirty-one million, three hundred forty thousand, one hundred twenty-two".