231232111222 has 24 divisors (see below), whose sum is σ = 416491813440. Its totient is φ = 95902717680.

The previous prime is 231232111217. The next prime is 231232111241. The reversal of 231232111222 is 222111232132.

It is a junction number, because it is equal to n+sod(n) for n = 231232111193 and 231232111202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38053597 + ... + 38059672.

It is an arithmetic number, because the mean of its divisors is an integer number (17353825560).

Almost surely, 2^231232111222 is an apocalyptic number.

231232111222 is a deficient number, since it is larger than the sum of its proper divisors (185259702218).

231232111222 is a wasteful number, since it uses less digits than its factorization.

231232111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76113316 (or 76113309 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 231232111222 its reverse (222111232132), we get a palindrome (453343343354).

The spelling of 231232111222 in words is "two hundred thirty-one billion, two hundred thirty-two million, one hundred eleven thousand, two hundred twenty-two".