22217087 has 2 divisors, whose sum is σ = 22217088. Its totient is φ = 22217086.

The previous prime is 22217033. The next prime is 22217101. The reversal of 22217087 is 78071222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22217087 - 2¹² = 22212991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22217387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11108543 + 11108544.

It is an arithmetic number, because the mean of its divisors is an integer number (11108544).

Almost surely, 2^22217087 is an apocalyptic number.

22217087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22217087 is an equidigital number, since it uses as much as digits as its factorization.

22217087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 22217087 is about 4713.5005038718. The cubic root of 22217087 is about 281.1225640281.

The spelling of 22217087 in words is "twenty-two million, two hundred seventeen thousand, eighty-seven".