20201012111999 has 2 divisors, whose sum is σ = 20201012112000. Its totient is φ = 20201012111998.

The previous prime is 20201012111993. The next prime is 20201012112013. The reversal of 20201012111999 is 99911121010202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20201012111999 - 2⁴ = 20201012111983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201012111993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100506055999 + 10100506056000.

It is an arithmetic number, because the mean of its divisors is an integer number (10100506056000).

Almost surely, 2^{20201012111999} is an apocalyptic number.

20201012111999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201012111999 is an equidigital number, since it uses as much as digits as its factorization.

20201012111999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 20201012111999 in words is "twenty trillion, two hundred one billion, twelve million, one hundred eleven thousand, nine hundred ninety-nine".