22122642 has 16 divisors (see below), whose sum is σ = 46169280. Its totient is φ = 7053552.

The previous prime is 22122629. The next prime is 22122643. The reversal of 22122642 is 24622122.

It is a super-2 number, since 2×22122642² = 978822578120328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22122643) 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, 80017 + ... + 80292.

It is an arithmetic number, because the mean of its divisors is an integer number (2885580).

Almost surely, 2^22122642 is an apocalyptic number.

22122642 is an abundant number, since it is smaller than the sum of its proper divisors (24046638).

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

22122642 is a wasteful number, since it uses less digits than its factorization.

22122642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160337.

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

The square root of 22122642 is about 4703.4712713059. The cubic root of 22122642 is about 280.7236468649.

Adding to 22122642 its reverse (24622122), we get a palindrome (46744764).

The spelling of 22122642 in words is "twenty-two million, one hundred twenty-two thousand, six hundred forty-two".