12312222122 has 8 divisors (see below), whose sum is σ = 18575087076. Its totient is φ = 6120526432.

The previous prime is 12312222073. The next prime is 12312222133. The reversal of 12312222122 is 22122221321.

It can be written as a sum of positive squares in 2 ways, for example, as 10334552281 + 1977669841 = 101659^2 + 44471^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12312222094 and 12312222103.

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, 17791883 + ... + 17792574.

Almost surely, 2^12312222122 is an apocalyptic number.

12312222122 is a deficient number, since it is larger than the sum of its proper divisors (6262864954).

12312222122 is a wasteful number, since it uses less digits than its factorization.

12312222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35584632.

The product of its digits is 384, while the sum is 20.

Adding to 12312222122 its reverse (22122221321), we get a palindrome (34434443443).

The spelling of 12312222122 in words is "twelve billion, three hundred twelve million, two hundred twenty-two thousand, one hundred twenty-two".