22122242 has 16 divisors (see below), whose sum is σ = 34128000. Its totient is φ = 10749648.

The previous prime is 22122241. The next prime is 22122259. The reversal of 22122242 is 24222122.

It is a super-2 number, since 2×22122242² = 978787182213128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22122242.

It is not an unprimeable number, because it can be changed into a prime (22122241) 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, 14009 + ... + 15507.

It is an arithmetic number, because the mean of its divisors is an integer number (2133000).

Almost surely, 2^22122242 is an apocalyptic number.

22122242 is a deficient number, since it is larger than the sum of its proper divisors (12005758).

22122242 is a wasteful number, since it uses less digits than its factorization.

22122242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705.

The product of its digits is 256, while the sum is 17.

The square root of 22122242 is about 4703.4287493275. The cubic root of 22122242 is about 280.7219549312.

Adding to 22122242 its reverse (24222122), we get a palindrome (46344364).

The spelling of 22122242 in words is "twenty-two million, one hundred twenty-two thousand, two hundred forty-two".