21444014204 has 6 divisors (see below), whose sum is σ = 37527024864. Its totient is φ = 10722007100.

The previous prime is 21444014203. The next prime is 21444014227. The reversal of 21444014204 is 40241044412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21444014201) by changing a digit.

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 as a sum of consecutive naturals, namely, 2680501772 + ... + 2680501779.

It is an arithmetic number, because the mean of its divisors is an integer number (6254504144).

Almost surely, 2^21444014204 is an apocalyptic number.

It is an amenable number.

21444014204 is a deficient number, since it is larger than the sum of its proper divisors (16083010660).

21444014204 is a wasteful number, since it uses less digits than its factorization.

21444014204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5361003555 (or 5361003553 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 21444014204 its reverse (40241044412), we get a palindrome (61685058616).

The spelling of 21444014204 in words is "twenty-one billion, four hundred forty-four million, fourteen thousand, two hundred four".