210020102120089 has 2 divisors, whose sum is σ = 210020102120090. Its totient is φ = 210020102120088.

The previous prime is 210020102120069. The next prime is 210020102120173. The reversal of 210020102120089 is 980021201020012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141436313290000 + 68583788830089 = 11892700^2 + 8281533^2 .

It is a cyclic number.

It is not a de Polignac number, because 210020102120089 - 2³⁵ = 209985742381721 is a prime.

It is a super-2 number, since 2×210020102120089² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210020102120009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010051060044 + 105010051060045.

It is an arithmetic number, because the mean of its divisors is an integer number (105010051060045).

Almost surely, 2^{210020102120089} is an apocalyptic number.

It is an amenable number.

210020102120089 is a deficient number, since it is larger than the sum of its proper divisors (1).

210020102120089 is an equidigital number, since it uses as much as digits as its factorization.

210020102120089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 210020102120089 in words is "two hundred ten trillion, twenty billion, one hundred two million, one hundred twenty thousand, eighty-nine".