22131322 has 12 divisors (see below), whose sum is σ = 33627258. Its totient is φ = 10923000.

The previous prime is 22131289. The next prime is 22131397. The reversal of 22131322 is 22313122.

It can be written as a sum of positive squares in only one way, i.e., 13256881 + 8874441 = 3641^2 + 2979^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22131296 and 22131305.

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 5 ways as a sum of consecutive naturals, for example, 66697 + ... + 67027.

Almost surely, 2^22131322 is an apocalyptic number.

22131322 is a deficient number, since it is larger than the sum of its proper divisors (11495936).

22131322 is an equidigital number, since it uses as much as digits as its factorization.

22131322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 434 counting only the distinct ones).

The product of its digits is 144, while the sum is 16.

The square root of 22131322 is about 4704.3939035757. The cubic root of 22131322 is about 280.7603568058.

Adding to 22131322 its reverse (22313122), we get a palindrome (44444444).

The spelling of 22131322 in words is "twenty-two million, one hundred thirty-one thousand, three hundred twenty-two".