12231222122 has 24 divisors (see below), whose sum is σ = 21347992260. Its totient is φ = 5240538240.

The previous prime is 12231222103. The next prime is 12231222167. The reversal of 12231222122 is 22122213221.

It can be written as a sum of positive squares in 2 ways, for example, as 8451308761 + 3779913361 = 91931^2 + 61481^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12231222094 and 12231222103.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400904 + ... + 430332.

Almost surely, 2^12231222122 is an apocalyptic number.

12231222122 is a deficient number, since it is larger than the sum of its proper divisors (9116770138).

12231222122 is a wasteful number, since it uses less digits than its factorization.

12231222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33686 (or 33679 counting only the distinct ones).

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

Adding to 12231222122 its reverse (22122213221), we get a palindrome (34353435343).

The spelling of 12231222122 in words is "twelve billion, two hundred thirty-one million, two hundred twenty-two thousand, one hundred twenty-two".