111312223122 has 16 divisors (see below), whose sum is σ = 222627715200. Its totient is φ = 37103529552.

The previous prime is 111312223103. The next prime is 111312223129. The reversal of 111312223122 is 221322213111.

It is a super-2 number, since 2×111312223122² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (111312223129) 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, 747879 + ... + 884277.

It is an arithmetic number, because the mean of its divisors is an integer number (13914232200).

Almost surely, 2^111312223122 is an apocalyptic number.

111312223122 is an abundant number, since it is smaller than the sum of its proper divisors (111315492078).

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

111312223122 is a wasteful number, since it uses less digits than its factorization.

111312223122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272417.

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

Adding to 111312223122 its reverse (221322213111), we get a palindrome (332634436233).

The spelling of 111312223122 in words is "one hundred eleven billion, three hundred twelve million, two hundred twenty-three thousand, one hundred twenty-two".