31212022222 has 8 divisors (see below), whose sum is σ = 46833811200. Its totient is φ = 15600751824.

The previous prime is 31212022211. The next prime is 31212022243. The reversal of 31212022222 is 22222021213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 31212022222.

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 3 ways as a sum of consecutive naturals, for example, 2622222 + ... + 2634097.

It is an arithmetic number, because the mean of its divisors is an integer number (5854226400).

Almost surely, 2^31212022222 is an apocalyptic number.

31212022222 is a deficient number, since it is larger than the sum of its proper divisors (15621788978).

31212022222 is a wasteful number, since it uses less digits than its factorization.

31212022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5259290.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 31212022222 its reverse (22222021213), we get a palindrome (53434043435).

The spelling of 31212022222 in words is "thirty-one billion, two hundred twelve million, twenty-two thousand, two hundred twenty-two".