22216055 has 16 divisors (see below), whose sum is σ = 27476064. Its totient is φ = 17233920.

The previous prime is 22216043. The next prime is 22216067. The reversal of 22216055 is 55061222.

22216055 = 846² + 847² + ... + 875².

It is an interprime number because it is at equal distance from previous prime (22216043) and next prime (22216067).

It is a de Polignac number, because none of the positive numbers 2^k-22216055 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22216055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62759 + ... + 63111.

It is an arithmetic number, because the mean of its divisors is an integer number (1717254).

Almost surely, 2^22216055 is an apocalyptic number.

22216055 is a deficient number, since it is larger than the sum of its proper divisors (5260009).

22216055 is a wasteful number, since it uses less digits than its factorization.

22216055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 22216055 is about 4713.3910298213. The cubic root of 22216055 is about 281.1182111775.

Adding to 22216055 its reverse (55061222), we get a palindrome (77277277).

The spelling of 22216055 in words is "twenty-two million, two hundred sixteen thousand, fifty-five".