22216087 has 2 divisors, whose sum is σ = 22216088. Its totient is φ = 22216086.

The previous prime is 22216081. The next prime is 22216097. The reversal of 22216087 is 78061222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22216087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22216081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11108043 + 11108044.

It is an arithmetic number, because the mean of its divisors is an integer number (11108044).

Almost surely, 2^22216087 is an apocalyptic number.

22216087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22216087 is an equidigital number, since it uses as much as digits as its factorization.

22216087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 22216087 is about 4713.3944244037. The cubic root of 22216087 is about 281.1183461517.

The spelling of 22216087 in words is "twenty-two million, two hundred sixteen thousand, eighty-seven".