202110120689 has 2 divisors, whose sum is σ = 202110120690. Its totient is φ = 202110120688.

The previous prime is 202110120679. The next prime is 202110120697. The reversal of 202110120689 is 986021011202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156641808400 + 45468312289 = 395780^2 + 213233^2 .

It is a cyclic number.

It is not a de Polignac number, because 202110120689 - 2¹⁶ = 202110055153 is a prime.

It is not a weakly prime, because it can be changed into another prime (202110120629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101055060344 + 101055060345.

It is an arithmetic number, because the mean of its divisors is an integer number (101055060345).

Almost surely, 2^202110120689 is an apocalyptic number.

It is an amenable number.

202110120689 is a deficient number, since it is larger than the sum of its proper divisors (1).

202110120689 is an equidigital number, since it uses as much as digits as its factorization.

202110120689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 202110120689 in words is "two hundred two billion, one hundred ten million, one hundred twenty thousand, six hundred eighty-nine".