20111031103112 has 16 divisors (see below), whose sum is σ = 38131870772700. Its totient is φ = 9942532230400.

The previous prime is 20111031103103. The next prime is 20111031103127. The reversal of 20111031103112 is 21130113011102.

It can be written as a sum of positive squares in 2 ways, for example, as 17904695183236 + 2206335919876 = 4231394^2 + 1485374^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14122914389 + ... + 14122915812.

Almost surely, 2^{20111031103112} is an apocalyptic number.

It is an amenable number.

20111031103112 is a deficient number, since it is larger than the sum of its proper divisors (18020839669588).

20111031103112 is a wasteful number, since it uses less digits than its factorization.

20111031103112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28245830296 (or 28245830292 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 20111031103112 its reverse (21130113011102), we get a palindrome (41241144114214).

The spelling of 20111031103112 in words is "twenty trillion, one hundred eleven billion, thirty-one million, one hundred three thousand, one hundred twelve".