201001909111 has 2 divisors, whose sum is σ = 201001909112. Its totient is φ = 201001909110.

The previous prime is 201001909099. The next prime is 201001909133. The reversal of 201001909111 is 111909100102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201001909111 - 2¹¹ = 201001907063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201001909151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500954555 + 100500954556.

It is an arithmetic number, because the mean of its divisors is an integer number (100500954556).

Almost surely, 2^201001909111 is an apocalyptic number.

201001909111 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001909111 is an equidigital number, since it uses as much as digits as its factorization.

201001909111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 25.

The spelling of 201001909111 in words is "two hundred one billion, one million, nine hundred nine thousand, one hundred eleven".