22117722 has 16 divisors (see below), whose sum is σ = 48256992. Its totient is φ = 6702320.

The previous prime is 22117681. The next prime is 22117723. The reversal of 22117722 is 22771122.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22117692 and 22117701.

It is not an unprimeable number, because it can be changed into a prime (22117723) 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, 167493 + ... + 167624.

It is an arithmetic number, because the mean of its divisors is an integer number (3016062).

Almost surely, 2^22117722 is an apocalyptic number.

22117722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22117722 is an abundant number, since it is smaller than the sum of its proper divisors (26139270).

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

22117722 is a wasteful number, since it uses less digits than its factorization.

22117722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335133.

The product of its digits is 784, while the sum is 24.

The square root of 22117722 is about 4702.9482242525. The cubic root of 22117722 is about 280.7028346620.

Adding to 22117722 its reverse (22771122), we get a palindrome (44888844).

The spelling of 22117722 in words is "twenty-two million, one hundred seventeen thousand, seven hundred twenty-two".