202112122189 has 2 divisors, whose sum is σ = 202112122190. Its totient is φ = 202112122188.

The previous prime is 202112122181. The next prime is 202112122217. The reversal of 202112122189 is 981221211202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106825692964 + 95286429225 = 326842^2 + 308685^2 .

It is a cyclic number.

It is not a de Polignac number, because 202112122189 - 2³ = 202112122181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202112122189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202112122181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101056061094 + 101056061095.

It is an arithmetic number, because the mean of its divisors is an integer number (101056061095).

Almost surely, 2^202112122189 is an apocalyptic number.

It is an amenable number.

202112122189 is a deficient number, since it is larger than the sum of its proper divisors (1).

202112122189 is an equidigital number, since it uses as much as digits as its factorization.

202112122189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 31.

The spelling of 202112122189 in words is "two hundred two billion, one hundred twelve million, one hundred twenty-two thousand, one hundred eighty-nine".