12211022312 has 16 divisors (see below), whose sum is σ = 23028014340. Its totient is φ = 6070218496.

The previous prime is 12211022297. The next prime is 12211022321. The reversal of 12211022312 is 21322011221.

It can be written as a sum of positive squares in 2 ways, for example, as 12088122916 + 122899396 = 109946^2 + 11086^2 .

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, 4410113 + ... + 4412880.

Almost surely, 2^12211022312 is an apocalyptic number.

It is an amenable number.

12211022312 is a deficient number, since it is larger than the sum of its proper divisors (10816992028).

12211022312 is a wasteful number, since it uses less digits than its factorization.

12211022312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8823172 (or 8823168 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12211022312 its reverse (21322011221), we get a palindrome (33533033533).

The spelling of 12211022312 in words is "twelve billion, two hundred eleven million, twenty-two thousand, three hundred twelve".