2122189 has 2 divisors, whose sum is σ = 2122190. Its totient is φ = 2122188.

The previous prime is 2122181. The next prime is 2122193. The reversal of 2122189 is 9812212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1646089 + 476100 = 1283^2 + 690^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122189 - 2³ = 2122181 is a prime.

It is equal to p₁₅₇₃₃₆ and since 2122189 and 157336 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061094 + 1061095.

It is an arithmetic number, because the mean of its divisors is an integer number (1061095).

2^2122189 is an apocalyptic number.

It is an amenable number.

2122189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122189 is an equidigital number, since it uses as much as digits as its factorization.

2122189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 25.

The square root of 2122189 is about 1456.7734895995. The cubic root of 2122189 is about 128.5073653214.

It can be divided in two parts, 212 and 2189, that added together give a 4-th power (2401 = 7⁴).

The spelling of 2122189 in words is "two million, one hundred twenty-two thousand, one hundred eighty-nine".