22122232 has 64 divisors (see below), whose sum is σ = 48470400. Its totient is φ = 9360000.

The previous prime is 22122223. The next prime is 22122241. The reversal of 22122232 is 23222122.

It is an interprime number because it is at equal distance from previous prime (22122223) and next prime (22122241).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 168807 + ... + 168937.

It is an arithmetic number, because the mean of its divisors is an integer number (757350).

Almost surely, 2^22122232 is an apocalyptic number.

22122232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22122232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24235200).

22122232 is an abundant number, since it is smaller than the sum of its proper divisors (26348168).

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

22122232 is a wasteful number, since it uses less digits than its factorization.

22122232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 264 counting only the distinct ones).

The product of its digits is 192, while the sum is 16.

The square root of 22122232 is about 4703.4276862731. The cubic root of 22122232 is about 280.7219126326.

Adding to 22122232 its reverse (23222122), we get a palindrome (45344354).

It can be divided in two parts, 2212 and 2232, that added together give a palindrome (4444).

The spelling of 22122232 in words is "twenty-two million, one hundred twenty-two thousand, two hundred thirty-two".