111222121224 has 32 divisors (see below), whose sum is σ = 284837142240. Its totient is φ = 36169795200.

The previous prime is 111222121201. The next prime is 111222121273. The reversal of 111222121224 is 422121222111.

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

It is a self number, because there is not a number n which added to its sum of digits gives 111222121224.

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, 56514322 + ... + 56516289.

It is an arithmetic number, because the mean of its divisors is an integer number (8901160695).

Almost surely, 2^111222121224 is an apocalyptic number.

It is an amenable number.

111222121224 is an abundant number, since it is smaller than the sum of its proper divisors (173615021016).

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

111222121224 is a wasteful number, since it uses less digits than its factorization.

111222121224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113030661 (or 113030657 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 111222121224 its reverse (422121222111), we get a palindrome (533343343335).

The spelling of 111222121224 in words is "one hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-four".