22144223420 has 48 divisors (see below), whose sum is σ = 51910201728. Its totient is φ = 7865175360.

The previous prime is 22144223407. The next prime is 22144223449. The reversal of 22144223420 is 2432244122.

It is a self number, because there is not a number n which added to its sum of digits gives 22144223420.

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 15 ways as a sum of consecutive naturals, for example, 1160954 + ... + 1179873.

It is an arithmetic number, because the mean of its divisors is an integer number (1081462536).

Almost surely, 2^22144223420 is an apocalyptic number.

22144223420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22144223420 is an abundant number, since it is smaller than the sum of its proper divisors (29765978308).

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

22144223420 is a wasteful number, since it uses less digits than its factorization.

22144223420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340890 (or 2340888 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 22144223420 its reverse (2432244122), we get a palindrome (24576467542).

The spelling of 22144223420 in words is "twenty-two billion, one hundred forty-four million, two hundred twenty-three thousand, four hundred twenty".