21445141112 has 64 divisors (see below), whose sum is σ = 41754204000. Its totient is φ = 10319256064.

The previous prime is 21445141043. The next prime is 21445141117. The reversal of 21445141112 is 21114154412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21445141117) 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, 19336814 + ... + 19337922.

Almost surely, 2^21445141112 is an apocalyptic number.

It is an amenable number.

21445141112 is a deficient number, since it is larger than the sum of its proper divisors (20309062888).

21445141112 is a wasteful number, since it uses less digits than its factorization.

21445141112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000 (or 1996 counting only the distinct ones).

The product of its digits is 1280, while the sum is 26.

Adding to 21445141112 its reverse (21114154412), we get a palindrome (42559295524).

The spelling of 21445141112 in words is "twenty-one billion, four hundred forty-five million, one hundred forty-one thousand, one hundred twelve".