210100200209989 has 2 divisors, whose sum is σ = 210100200209990. Its totient is φ = 210100200209988.

The previous prime is 210100200209981. The next prime is 210100200210067. The reversal of 210100200209989 is 989902002001012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190361817225889 + 19738382984100 = 13797167^2 + 4442790^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100200209989 - 2³ = 210100200209981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210100200209981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050100104994 + 105050100104995.

It is an arithmetic number, because the mean of its divisors is an integer number (105050100104995).

Almost surely, 2^{210100200209989} is an apocalyptic number.

It is an amenable number.

210100200209989 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100200209989 is an equidigital number, since it uses as much as digits as its factorization.

210100200209989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 210100200209989 in words is "two hundred ten trillion, one hundred billion, two hundred million, two hundred nine thousand, nine hundred eighty-nine".