312212244122222 has 4 divisors (see below), whose sum is σ = 468318366183336. Its totient is φ = 156106122061110.

The previous prime is 312212244122203. The next prime is 312212244122227. The reversal of 312212244122222 is 222221442212213.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212244122227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78053061030554 + ... + 78053061030557.

It is an arithmetic number, because the mean of its divisors is an integer number (117079591545834).

Almost surely, 2^{312212244122222} is an apocalyptic number.

312212244122222 is a deficient number, since it is larger than the sum of its proper divisors (156106122061114).

312212244122222 is a wasteful number, since it uses less digits than its factorization.

312212244122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156106122061113.

The product of its digits is 24576, while the sum is 32.

Adding to 312212244122222 its reverse (222221442212213), we get a palindrome (534433686334435).

The spelling of 312212244122222 in words is "three hundred twelve trillion, two hundred twelve billion, two hundred forty-four million, one hundred twenty-two thousand, two hundred twenty-two".