22144220424 has 64 divisors (see below), whose sum is σ = 61524374400. Its totient is φ = 7379888832.

The previous prime is 22144220401. The next prime is 22144220447. The reversal of 22144220424 is 42402244122.

22144220424 is a `hidden beast` number, since 2 + 2 + 14 + 4 + 220 + 424 = 666.

It is an interprime number because it is at equal distance from previous prime (22144220401) and next prime (22144220447).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 1636374 + ... + 1649850.

It is an arithmetic number, because the mean of its divisors is an integer number (961318350).

Almost surely, 2^22144220424 is an apocalyptic number.

22144220424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22144220424 is an abundant number, since it is smaller than the sum of its proper divisors (39380153976).

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

22144220424 is a wasteful number, since it uses less digits than its factorization.

22144220424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21099 (or 21089 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

Adding to 22144220424 its reverse (42402244122), we get a palindrome (64546464546).

The spelling of 22144220424 in words is "twenty-two billion, one hundred forty-four million, two hundred twenty thousand, four hundred twenty-four".