21010301444 has 12 divisors (see below), whose sum is σ = 40110575568. Its totient is φ = 9550137000.

The previous prime is 21010301407. The next prime is 21010301447. The reversal of 21010301444 is 44410301012.

It is not an unprimeable number, because it can be changed into a prime (21010301447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238753382 + ... + 238753469.

It is an arithmetic number, because the mean of its divisors is an integer number (3342547964).

Almost surely, 2^21010301444 is an apocalyptic number.

It is an amenable number.

21010301444 is a deficient number, since it is larger than the sum of its proper divisors (19100274124).

21010301444 is a wasteful number, since it uses less digits than its factorization.

21010301444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477506866 (or 477506864 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21010301444 its reverse (44410301012), we get a palindrome (65420602456).

The spelling of 21010301444 in words is "twenty-one billion, ten million, three hundred one thousand, four hundred forty-four".