16218222 has 16 divisors (see below), whose sum is σ = 32603472. Its totient is φ = 5378240.

The previous prime is 16218217. The next prime is 16218227. The reversal of 16218222 is 22281261.

It is an interprime number because it is at equal distance from previous prime (16218217) and next prime (16218227).

It is a junction number, because it is equal to n+sod(n) for n = 16218192 and 16218201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16218227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5679 + ... + 8042.

It is an arithmetic number, because the mean of its divisors is an integer number (2037717).

Almost surely, 2^16218222 is an apocalyptic number.

16218222 is an abundant number, since it is smaller than the sum of its proper divisors (16385250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16218222 is a wasteful number, since it uses less digits than its factorization.

16218222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13923.

The product of its digits is 768, while the sum is 24.

The square root of 16218222 is about 4027.1853694609. The cubic root of 16218222 is about 253.1246345979.

Adding to 16218222 its reverse (22281261), we get a palindrome (38499483).

The spelling of 16218222 in words is "sixteen million, two hundred eighteen thousand, two hundred twenty-two".