21443443010 has 16 divisors (see below), whose sum is σ = 42107124672. Its totient is φ = 7797615600.

The previous prime is 21443442971. The next prime is 21443443019. The reversal of 21443443010 is 1034434412.

It is not an unprimeable number, because it can be changed into a prime (21443443019) by changing a digit.

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, 97470086 + ... + 97470305.

It is an arithmetic number, because the mean of its divisors is an integer number (2631695292).

Almost surely, 2^21443443010 is an apocalyptic number.

21443443010 is a deficient number, since it is larger than the sum of its proper divisors (20663681662).

21443443010 is a wasteful number, since it uses less digits than its factorization.

21443443010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194940409.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21443443010 its reverse (1034434412), we get a palindrome (22477877422).

The spelling of 21443443010 in words is "twenty-one billion, four hundred forty-three million, four hundred forty-three thousand, ten".