22443400012 has 12 divisors (see below), whose sum is σ = 42846491016. Its totient is φ = 10201545440.

The previous prime is 22443399917. The next prime is 22443400027. The reversal of 22443400012 is 21000434422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255038593 + ... + 255038680.

It is an arithmetic number, because the mean of its divisors is an integer number (3570540918).

Almost surely, 2^22443400012 is an apocalyptic number.

22443400012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22443400012 is a deficient number, since it is larger than the sum of its proper divisors (20403091004).

22443400012 is a wasteful number, since it uses less digits than its factorization.

22443400012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510077288 (or 510077286 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22443400012 its reverse (21000434422), we get a palindrome (43443834434).

The spelling of 22443400012 in words is "twenty-two billion, four hundred forty-three million, four hundred thousand, twelve".