22216422 has 16 divisors (see below), whose sum is σ = 44594352. Its totient is φ = 7378560.

The previous prime is 22216417. The next prime is 22216451. The reversal of 22216422 is 22461222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4903 + ... + 8274.

It is an arithmetic number, because the mean of its divisors is an integer number (2787147).

Almost surely, 2^22216422 is an apocalyptic number.

22216422 is an abundant number, since it is smaller than the sum of its proper divisors (22377930).

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

22216422 is a wasteful number, since it uses less digits than its factorization.

22216422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13463.

The product of its digits is 768, while the sum is 21.

The square root of 22216422 is about 4713.4299612915. The cubic root of 22216422 is about 281.1197591544.

Adding to 22216422 its reverse (22461222), we get a palindrome (44677644).

The spelling of 22216422 in words is "twenty-two million, two hundred sixteen thousand, four hundred twenty-two".