222111331225 has 96 divisors (see below), whose sum is σ = 335839219200. Its totient is φ = 142249820160.

The previous prime is 222111331213. The next prime is 222111331231. The reversal of 222111331225 is 522133111222.

It is not a de Polignac number, because 222111331225 - 2⁵ = 222111331193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 222111331225.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 343293852 + ... + 343294498.

It is an arithmetic number, because the mean of its divisors is an integer number (3498325200).

Almost surely, 2^222111331225 is an apocalyptic number.

222111331225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222111331225 is a deficient number, since it is larger than the sum of its proper divisors (113727887975).

222111331225 is a wasteful number, since it uses less digits than its factorization.

222111331225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387 (or 1382 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

Adding to 222111331225 its reverse (522133111222), we get a palindrome (744244442447).

The spelling of 222111331225 in words is "two hundred twenty-two billion, one hundred eleven million, three hundred thirty-one thousand, two hundred twenty-five".