201002111 has 2 divisors, whose sum is σ = 201002112. Its totient is φ = 201002110.

The previous prime is 201002063. The next prime is 201002141. The reversal of 201002111 is 111200102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201002111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201002141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100501055 + 100501056.

It is an arithmetic number, because the mean of its divisors is an integer number (100501056).

Almost surely, 2^201002111 is an apocalyptic number.

201002111 is a deficient number, since it is larger than the sum of its proper divisors (1).

201002111 is an equidigital number, since it uses as much as digits as its factorization.

201002111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 201002111 is about 14177.5213277921. The cubic root of 201002111 is about 585.7786509617.

Adding to 201002111 its reverse (111200102), we get a palindrome (312202213).

The spelling of 201002111 in words is "two hundred one million, two thousand, one hundred eleven".