20111012312 has 32 divisors (see below), whose sum is σ = 38021790720. Its totient is φ = 9972093600.

The previous prime is 20111012309. The next prime is 20111012357. The reversal of 20111012312 is 21321011102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719543 + ... + 746969.

It is an arithmetic number, because the mean of its divisors is an integer number (1188180960).

Almost surely, 2^20111012312 is an apocalyptic number.

It is an amenable number.

20111012312 is a deficient number, since it is larger than the sum of its proper divisors (17910778408).

20111012312 is a wasteful number, since it uses less digits than its factorization.

20111012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28191 (or 28187 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20111012312 its reverse (21321011102), we get a palindrome (41432023414).

The spelling of 20111012312 in words is "twenty billion, one hundred eleven million, twelve thousand, three hundred twelve".