21442030224 has 40 divisors (see below), whose sum is σ = 56437048512. Its totient is φ = 7012487040.

The previous prime is 21442030199. The next prime is 21442030261. The reversal of 21442030224 is 42203024412.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 21442030194 and 21442030203.

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, 4211692 + ... + 4216779.

Almost surely, 2^21442030224 is an apocalyptic number.

21442030224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21442030224 is an abundant number, since it is smaller than the sum of its proper divisors (34995018288).

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

21442030224 is a wasteful number, since it uses less digits than its factorization.

21442030224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8428535 (or 8428529 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21442030224 its reverse (42203024412), we get a palindrome (63645054636).

The spelling of 21442030224 in words is "twenty-one billion, four hundred forty-two million, thirty thousand, two hundred twenty-four".