20112113102987 has 2 divisors, whose sum is σ = 20112113102988. Its totient is φ = 20112113102986.

The previous prime is 20112113102981. The next prime is 20112113103031. The reversal of 20112113102987 is 78920131121102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20112113102987 - 2⁶ = 20112113102923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112113102987.

It is not a weakly prime, because it can be changed into another prime (20112113102981) 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 as a sum of consecutive naturals, namely, 10056056551493 + 10056056551494.

It is an arithmetic number, because the mean of its divisors is an integer number (10056056551494).

Almost surely, 2^{20112113102987} is an apocalyptic number.

20112113102987 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112113102987 is an equidigital number, since it uses as much as digits as its factorization.

20112113102987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 38.

The spelling of 20112113102987 in words is "twenty trillion, one hundred twelve billion, one hundred thirteen million, one hundred two thousand, nine hundred eighty-seven".