210020010989 has 2 divisors, whose sum is σ = 210020010990. Its totient is φ = 210020010988.

The previous prime is 210020010973. The next prime is 210020011027. The reversal of 210020010989 is 989010020012.

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., 165885144100 + 44134866889 = 407290^2 + 210083^2 .

It is a cyclic number.

It is not a de Polignac number, because 210020010989 - 2⁴ = 210020010973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210020010089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010005494 + 105010005495.

It is an arithmetic number, because the mean of its divisors is an integer number (105010005495).

Almost surely, 2^210020010989 is an apocalyptic number.

It is an amenable number.

210020010989 is a deficient number, since it is larger than the sum of its proper divisors (1).

210020010989 is an equidigital number, since it uses as much as digits as its factorization.

210020010989 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 spelling of 210020010989 in words is "two hundred ten billion, twenty million, ten thousand, nine hundred eighty-nine".