201001113991 has 2 divisors, whose sum is σ = 201001113992. Its totient is φ = 201001113990.

The previous prime is 201001113983. The next prime is 201001114043. The reversal of 201001113991 is 199311100102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201001113991 - 2³ = 201001113983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201001113961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500556995 + 100500556996.

It is an arithmetic number, because the mean of its divisors is an integer number (100500556996).

Almost surely, 2^201001113991 is an apocalyptic number.

201001113991 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001113991 is an equidigital number, since it uses as much as digits as its factorization.

201001113991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 201001113991 in words is "two hundred one billion, one million, one hundred thirteen thousand, nine hundred ninety-one".