201102689 has 2 divisors, whose sum is σ = 201102690. Its totient is φ = 201102688.

The previous prime is 201102677. The next prime is 201102773. The reversal of 201102689 is 986201102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153561664 + 47541025 = 12392^2 + 6895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201102689 is a prime.

It is equal to p_11136683 and since 201102689 and 11136683 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (201102589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100551344 + 100551345.

It is an arithmetic number, because the mean of its divisors is an integer number (100551345).

Almost surely, 2^201102689 is an apocalyptic number.

It is an amenable number.

201102689 is a deficient number, since it is larger than the sum of its proper divisors (1).

201102689 is an equidigital number, since it uses as much as digits as its factorization.

201102689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 201102689 is about 14181.0679781179. The cubic root of 201102689 is about 585.8763391911.

The spelling of 201102689 in words is "two hundred one million, one hundred two thousand, six hundred eighty-nine".