12331220122 has 32 divisors (see below), whose sum is σ = 20168062992. Its totient is φ = 5620790784.

The previous prime is 12331220107. The next prime is 12331220149. The reversal of 12331220122 is 22102213321.

It can be written as a sum of positive squares in 8 ways, for example, as 9356499441 + 2974720681 = 96729^2 + 54541^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12331220122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 692928 + ... + 710500.

Almost surely, 2^12331220122 is an apocalyptic number.

12331220122 is a deficient number, since it is larger than the sum of its proper divisors (7836842870).

12331220122 is a wasteful number, since it uses less digits than its factorization.

12331220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17922.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12331220122 its reverse (22102213321), we get a palindrome (34433433443).

The spelling of 12331220122 in words is "twelve billion, three hundred thirty-one million, two hundred twenty thousand, one hundred twenty-two".