21444132300 has 36 divisors (see below), whose sum is σ = 62045023656. Its totient is φ = 5718435200.

The previous prime is 21444132263. The next prime is 21444132373. The reversal of 21444132300 is 323144412.

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, 35739921 + ... + 35740520.

Almost surely, 2^21444132300 is an apocalyptic number.

21444132300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21444132300 is an abundant number, since it is smaller than the sum of its proper divisors (40600891356).

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

21444132300 is a wasteful number, since it uses less digits than its factorization.

21444132300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71480458 (or 71480451 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21444132300 its reverse (323144412), we get a palindrome (21767276712).

The spelling of 21444132300 in words is "twenty-one billion, four hundred forty-four million, one hundred thirty-two thousand, three hundred".