20331122312 has 16 divisors (see below), whose sum is σ = 39050631900. Its totient is φ = 9917620480.

The previous prime is 20331122309. The next prime is 20331122321. The reversal of 20331122312 is 21322113302.

It can be written as a sum of positive squares in 2 ways, for example, as 12686417956 + 7644704356 = 112634^2 + 87434^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30992237 + ... + 30992892.

Almost surely, 2^20331122312 is an apocalyptic number.

It is an amenable number.

20331122312 is a deficient number, since it is larger than the sum of its proper divisors (18719509588).

20331122312 is a wasteful number, since it uses less digits than its factorization.

20331122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61985176 (or 61985172 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20331122312 its reverse (21322113302), we get a palindrome (41653235614).

The spelling of 20331122312 in words is "twenty billion, three hundred thirty-one million, one hundred twenty-two thousand, three hundred twelve".