22216242 has 16 divisors (see below), whose sum is σ = 45378432. Its totient is φ = 7247760.

The previous prime is 22216241. The next prime is 22216267. The reversal of 22216242 is 24261222.

It is a super-2 number, since 2×22216242² = 987122817205128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22216241) 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, 39109 + ... + 39672.

It is an arithmetic number, because the mean of its divisors is an integer number (2836152).

Almost surely, 2^22216242 is an apocalyptic number.

22216242 is an abundant number, since it is smaller than the sum of its proper divisors (23162190).

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

22216242 is a wasteful number, since it uses less digits than its factorization.

22216242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78833.

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

The square root of 22216242 is about 4713.4108668776. The cubic root of 22216242 is about 281.1189999308.

Adding to 22216242 its reverse (24261222), we get a palindrome (46477464).

The spelling of 22216242 in words is "twenty-two million, two hundred sixteen thousand, two hundred forty-two".