20112103031999 has 16 divisors (see below), whose sum is σ = 22154905154304. Its totient is φ = 18105061771200.

The previous prime is 20112103031971. The next prime is 20112103032011. The reversal of 20112103031999 is 99913030121102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20112103031999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112103031939) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17434292 + ... + 18552054.

It is an arithmetic number, because the mean of its divisors is an integer number (1384681572144).

Almost surely, 2^{20112103031999} is an apocalyptic number.

20112103031999 is a deficient number, since it is larger than the sum of its proper divisors (2042802122305).

20112103031999 is a wasteful number, since it uses less digits than its factorization.

20112103031999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133758.

The product of its (nonzero) digits is 26244, while the sum is 41.

The spelling of 20112103031999 in words is "twenty trillion, one hundred twelve billion, one hundred three million, thirty-one thousand, nine hundred ninety-nine".