2312322221212 has 12 divisors (see below), whose sum is σ = 4047171617160. Its totient is φ = 1155987473456.

The previous prime is 2312322221201. The next prime is 2312322221221. The reversal of 2312322221212 is 2121222232132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43379323 + ... + 43432594.

It is an arithmetic number, because the mean of its divisors is an integer number (337264301430).

Almost surely, 2^{2312322221212} is an apocalyptic number.

It is an amenable number.

2312322221212 is a deficient number, since it is larger than the sum of its proper divisors (1734849395948).

2312322221212 is a wasteful number, since it uses less digits than its factorization.

2312322221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86818580 (or 86818578 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

Adding to 2312322221212 its reverse (2121222232132), we get a palindrome (4433544453344).

The spelling of 2312322221212 in words is "two trillion, three hundred twelve billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred twelve".