22231322012 has 24 divisors (see below), whose sum is σ = 39610636800. Its totient is φ = 10914439536.

The previous prime is 22231321949. The next prime is 22231322023. The reversal of 22231322012 is 21022313222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147893 + ... + 257555.

It is an arithmetic number, because the mean of its divisors is an integer number (1650443200).

Almost surely, 2^22231322012 is an apocalyptic number.

It is an amenable number.

22231322012 is a deficient number, since it is larger than the sum of its proper divisors (17379314788).

22231322012 is a wasteful number, since it uses less digits than its factorization.

22231322012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110585 (or 110583 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22231322012 its reverse (21022313222), we get a palindrome (43253635234).

The spelling of 22231322012 in words is "twenty-two billion, two hundred thirty-one million, three hundred twenty-two thousand, twelve".