21024201444 has 24 divisors (see below), whose sum is σ = 51942145248. Its totient is φ = 6595827840.

The previous prime is 21024201413. The next prime is 21024201449. The reversal of 21024201444 is 44410242012.

It is not an unprimeable number, because it can be changed into a prime (21024201449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51529702 + ... + 51530109.

It is an arithmetic number, because the mean of its divisors is an integer number (2164256052).

Almost surely, 2^21024201444 is an apocalyptic number.

It is an amenable number.

21024201444 is an abundant number, since it is smaller than the sum of its proper divisors (30917943804).

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

21024201444 is a wasteful number, since it uses less digits than its factorization.

21024201444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103059835 (or 103059833 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 21024201444 its reverse (44410242012), we get a palindrome (65434443456).

The spelling of 21024201444 in words is "twenty-one billion, twenty-four million, two hundred one thousand, four hundred forty-four".