22121089 has 2 divisors, whose sum is σ = 22121090. Its totient is φ = 22121088.

The previous prime is 22121083. The next prime is 22121137. The reversal of 22121089 is 98012122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19847025 + 2274064 = 4455^2 + 1508^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121089 - 2¹³ = 22112897 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060544 + 11060545.

It is an arithmetic number, because the mean of its divisors is an integer number (11060545).

Almost surely, 2^22121089 is an apocalyptic number.

It is an amenable number.

22121089 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121089 is an equidigital number, since it uses as much as digits as its factorization.

22121089 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22121089 is about 4703.3061775734. The cubic root of 22121089 is about 280.7170778179.

The spelling of 22121089 in words is "twenty-two million, one hundred twenty-one thousand, eighty-nine".