231222111222 has 16 divisors (see below), whose sum is σ = 462464106480. Its totient is φ = 77070723072.

The previous prime is 231222111191. The next prime is 231222111293. The reversal of 231222111222 is 222111222132.

231222111222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 675147 + ... + 958262.

It is an arithmetic number, because the mean of its divisors is an integer number (28904006655).

Almost surely, 2^231222111222 is an apocalyptic number.

231222111222 is an abundant number, since it is smaller than the sum of its proper divisors (231241995258).

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

231222111222 is a wasteful number, since it uses less digits than its factorization.

231222111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657007.

The product of its digits is 384, while the sum is 21.

Adding to 231222111222 its reverse (222111222132), we get a palindrome (453333333354).

The spelling of 231222111222 in words is "two hundred thirty-one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".