122002142189 has 2 divisors, whose sum is σ = 122002142190. Its totient is φ = 122002142188.

The previous prime is 122002142159. The next prime is 122002142231. The reversal of 122002142189 is 981241200221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104377455625 + 17624686564 = 323075^2 + 132758^2 .

It is a cyclic number.

It is not a de Polignac number, because 122002142189 - 2²⁸ = 121733706733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122002142159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61001071094 + 61001071095.

It is an arithmetic number, because the mean of its divisors is an integer number (61001071095).

Almost surely, 2^122002142189 is an apocalyptic number.

It is an amenable number.

122002142189 is a deficient number, since it is larger than the sum of its proper divisors (1).

122002142189 is an equidigital number, since it uses as much as digits as its factorization.

122002142189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 122002142189 in words is "one hundred twenty-two billion, two million, one hundred forty-two thousand, one hundred eighty-nine".