12212112122 has 48 divisors (see below), whose sum is σ = 21458818728. Its totient is φ = 5197086720.

The previous prime is 12212112119. The next prime is 12212112151. The reversal of 12212112122 is 22121121221.

It can be written as a sum of positive squares in 4 ways, for example, as 11616312841 + 595799281 = 107779^2 + 24409^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12212112122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11509472 + ... + 11510532.

Almost surely, 2^12212112122 is an apocalyptic number.

12212112122 is a deficient number, since it is larger than the sum of its proper divisors (9246706606).

12212112122 is a wasteful number, since it uses less digits than its factorization.

12212112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791 (or 1784 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

Adding to 12212112122 its reverse (22121121221), we get a palindrome (34333233343).

Subtracting 12212112122 from its reverse (22121121221), we obtain a palindrome (9909009099).

The spelling of 12212112122 in words is "twelve billion, two hundred twelve million, one hundred twelve thousand, one hundred twenty-two".