231222333212 has 24 divisors (see below), whose sum is σ = 438046678272. Its totient is φ = 106159262400.

The previous prime is 231222333203. The next prime is 231222333227. The reversal of 231222333212 is 212333222132.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11630339 + ... + 11650202.

It is an arithmetic number, because the mean of its divisors is an integer number (18251944928).

Almost surely, 2^231222333212 is an apocalyptic number.

It is an amenable number.

231222333212 is a deficient number, since it is larger than the sum of its proper divisors (206824345060).

231222333212 is a wasteful number, since it uses less digits than its factorization.

231222333212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23280749 (or 23280747 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

Adding to 231222333212 its reverse (212333222132), we get a palindrome (443555555344).

The spelling of 231222333212 in words is "two hundred thirty-one billion, two hundred twenty-two million, three hundred thirty-three thousand, two hundred twelve".