201112991 has 2 divisors, whose sum is σ = 201112992. Its totient is φ = 201112990.

The previous prime is 201112987. The next prime is 201113069. The reversal of 201112991 is 199211102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201112991 - 2² = 201112987 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201112991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201112931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100556495 + 100556496.

It is an arithmetic number, because the mean of its divisors is an integer number (100556496).

Almost surely, 2^201112991 is an apocalyptic number.

201112991 is a deficient number, since it is larger than the sum of its proper divisors (1).

201112991 is an equidigital number, since it uses as much as digits as its factorization.

201112991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 201112991 is about 14181.4312042191. The cubic root of 201112991 is about 585.8863433586.

The spelling of 201112991 in words is "two hundred one million, one hundred twelve thousand, nine hundred ninety-one".