122111189 has 2 divisors, whose sum is σ = 122111190. Its totient is φ = 122111188.

The previous prime is 122111183. The next prime is 122111219. The reversal of 122111189 is 981111221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104387089 + 17724100 = 10217^2 + 4210^2 .

It is an emirp because it is prime and its reverse (981111221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122111189 is a prime.

It is a super-2 number, since 2×122111189² = 29822284957987442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen 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 (122111183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61055594 + 61055595.

It is an arithmetic number, because the mean of its divisors is an integer number (61055595).

Almost surely, 2^122111189 is an apocalyptic number.

It is an amenable number.

122111189 is a deficient number, since it is larger than the sum of its proper divisors (1).

122111189 is an equidigital number, since it uses as much as digits as its factorization.

122111189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 26.

The square root of 122111189 is about 11050.3931604265. The cubic root of 122111189 is about 496.1181931413.

The spelling of 122111189 in words is "one hundred twenty-two million, one hundred eleven thousand, one hundred eighty-nine".