200122185689 has 2 divisors, whose sum is σ = 200122185690. Its totient is φ = 200122185688.

The previous prime is 200122185649. The next prime is 200122185691. The reversal of 200122185689 is 986581221002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188152075225 + 11970110464 = 433765^2 + 109408^2 .

It is a cyclic number.

It is not a de Polignac number, because 200122185689 - 2¹² = 200122181593 is a prime.

Together with 200122185691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200122185649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100061092844 + 100061092845.

It is an arithmetic number, because the mean of its divisors is an integer number (100061092845).

Almost surely, 2^200122185689 is an apocalyptic number.

It is an amenable number.

200122185689 is a deficient number, since it is larger than the sum of its proper divisors (1).

200122185689 is an equidigital number, since it uses as much as digits as its factorization.

200122185689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 200122185689 in words is "two hundred billion, one hundred twenty-two million, one hundred eighty-five thousand, six hundred eighty-nine".