22123344440 has 16 divisors (see below), whose sum is σ = 49777525080. Its totient is φ = 8849337760.

The previous prime is 22123344427. The next prime is 22123344487. The reversal of 22123344440 is 4444332122.

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 3 ways as a sum of consecutive naturals, for example, 276541766 + ... + 276541845.

Almost surely, 2^22123344440 is an apocalyptic number.

22123344440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22123344440 is an abundant number, since it is smaller than the sum of its proper divisors (27654180640).

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

22123344440 is a wasteful number, since it uses less digits than its factorization.

22123344440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553083622 (or 553083618 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 22123344440 its reverse (4444332122), we get a palindrome (26567676562).

The spelling of 22123344440 in words is "twenty-two billion, one hundred twenty-three million, three hundred forty-four thousand, four hundred forty".