201120989 has 2 divisors, whose sum is σ = 201120990. Its totient is φ = 201120988.

The previous prime is 201120979. The next prime is 201121001. The reversal of 201120989 is 989021102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160224964 + 40896025 = 12658^2 + 6395^2 .

It is a cyclic number.

It is not a de Polignac number, because 201120989 - 2¹² = 201116893 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201120979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560494 + 100560495.

It is an arithmetic number, because the mean of its divisors is an integer number (100560495).

Almost surely, 2^201120989 is an apocalyptic number.

It is an amenable number.

201120989 is a deficient number, since it is larger than the sum of its proper divisors (1).

201120989 is an equidigital number, since it uses as much as digits as its factorization.

201120989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 201120989 is about 14181.7131898794. The cubic root of 201120989 is about 585.8941098996.

The spelling of 201120989 in words is "two hundred one million, one hundred twenty thousand, nine hundred eighty-nine".