21442300044 has 48 divisors (see below), whose sum is σ = 54618606336. Its totient is φ = 6493118400.

The previous prime is 21442300031. The next prime is 21442300081. The reversal of 21442300044 is 44000324412.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21442299987 and 21442300023.

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, 134874 + ... + 247134.

It is an arithmetic number, because the mean of its divisors is an integer number (1137887632).

Almost surely, 2^21442300044 is an apocalyptic number.

It is an amenable number.

21442300044 is an abundant number, since it is smaller than the sum of its proper divisors (33176306292).

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

21442300044 is a wasteful number, since it uses less digits than its factorization.

21442300044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113726 (or 113724 counting only the distinct ones).

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

Adding to 21442300044 its reverse (44000324412), we get a palindrome (65442624456).

The spelling of 21442300044 in words is "twenty-one billion, four hundred forty-two million, three hundred thousand, forty-four".