21444410200 has 48 divisors (see below), whose sum is σ = 50175895680. Its totient is φ = 8523116160.

The previous prime is 21444410179. The next prime is 21444410231. The reversal of 21444410200 is 201444412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310072 + ... + 372871.

It is an arithmetic number, because the mean of its divisors is an integer number (1045331160).

Almost surely, 2^21444410200 is an apocalyptic number.

21444410200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21444410200 is an abundant number, since it is smaller than the sum of its proper divisors (28731485480).

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

21444410200 is a wasteful number, since it uses less digits than its factorization.

21444410200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683116 (or 683107 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 21444410200 its reverse (201444412), we get a palindrome (21645854612).

The spelling of 21444410200 in words is "twenty-one billion, four hundred forty-four million, four hundred ten thousand, two hundred".