21443455021112 has 32 divisors (see below), whose sum is σ = 42324168363600. Its totient is φ = 10157051718144.

The previous prime is 21443455021111. The next prime is 21443455021141. The reversal of 21443455021112 is 21112055434412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21443455021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1560128 + ... + 6732080.

Almost surely, 2^{21443455021112} is an apocalyptic number.

It is an amenable number.

21443455021112 is a deficient number, since it is larger than the sum of its proper divisors (20880713342488).

21443455021112 is a wasteful number, since it uses less digits than its factorization.

21443455021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199255 (or 5199251 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 21443455021112 in words is "twenty-one trillion, four hundred forty-three billion, four hundred fifty-five million, twenty-one thousand, one hundred twelve".