22212822 has 16 divisors (see below), whose sum is σ = 44619120. Its totient is φ = 7372032.

The previous prime is 22212821. The next prime is 22212823. The reversal of 22212822 is 22821222.

It is an interprime number because it is at equal distance from previous prime (22212821) and next prime (22212823).

It is a super-2 number, since 2×22212822² = 986818922407368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6547 + ... + 9342.

It is an arithmetic number, because the mean of its divisors is an integer number (2788695).

Almost surely, 2^22212822 is an apocalyptic number.

22212822 is an abundant number, since it is smaller than the sum of its proper divisors (22406298).

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

22212822 is a wasteful number, since it uses less digits than its factorization.

22212822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16127.

The product of its digits is 512, while the sum is 21.

The square root of 22212822 is about 4713.0480583164. The cubic root of 22212822 is about 281.1045739038.

Subtracting 22212822 from its reverse (22821222), we obtain a square (608400 = 780²).

The spelling of 22212822 in words is "twenty-two million, two hundred twelve thousand, eight hundred twenty-two".