201230210989 has 2 divisors, whose sum is σ = 201230210990. Its totient is φ = 201230210988.

The previous prime is 201230210983. The next prime is 201230211001. The reversal of 201230210989 is 989012032102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160136028900 + 41094182089 = 400170^2 + 202717^2 .

It is a cyclic number.

It is not a de Polignac number, because 201230210989 - 2³ = 201230210981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201230210981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100615105494 + 100615105495.

It is an arithmetic number, because the mean of its divisors is an integer number (100615105495).

Almost surely, 2^201230210989 is an apocalyptic number.

It is an amenable number.

201230210989 is a deficient number, since it is larger than the sum of its proper divisors (1).

201230210989 is an equidigital number, since it uses as much as digits as its factorization.

201230210989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 201230210989 in words is "two hundred one billion, two hundred thirty million, two hundred ten thousand, nine hundred eighty-nine".