21141012444 has 48 divisors (see below), whose sum is σ = 49842304512. Its totient is φ = 6973774272.

The previous prime is 21141012443. The next prime is 21141012449. The reversal of 21141012444 is 44421014112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141012443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2087497 + ... + 2097599.

It is an arithmetic number, because the mean of its divisors is an integer number (1038381344).

Almost surely, 2^21141012444 is an apocalyptic number.

It is an amenable number.

21141012444 is an abundant number, since it is smaller than the sum of its proper divisors (28701292068).

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

21141012444 is a wasteful number, since it uses less digits than its factorization.

21141012444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11906 (or 11904 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 21141012444 its reverse (44421014112), we get a palindrome (65562026556).

The spelling of 21141012444 in words is "twenty-one billion, one hundred forty-one million, twelve thousand, four hundred forty-four".