22212889 has 2 divisors, whose sum is σ = 22212890. Its totient is φ = 22212888.

The previous prime is 22212859. The next prime is 22212893. The reversal of 22212889 is 98821222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22014864 + 198025 = 4692^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212889 - 2¹³ = 22204697 is a prime.

It is not a weakly prime, because it can be changed into another prime (22212859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106444 + 11106445.

It is an arithmetic number, because the mean of its divisors is an integer number (11106445).

Almost surely, 2^22212889 is an apocalyptic number.

It is an amenable number.

22212889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212889 is an equidigital number, since it uses as much as digits as its factorization.

22212889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 22212889 is about 4713.0551662377. The cubic root of 22212889 is about 281.1048565332.

The spelling of 22212889 in words is "twenty-two million, two hundred twelve thousand, eight hundred eighty-nine".