21443333334412 has 24 divisors (see below), whose sum is σ = 40937560473600. Its totient is φ = 9746901186960.

The previous prime is 21443333334407. The next prime is 21443333334419.

21443333334412 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (21443333334419) 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, 4905589 + ... + 8182387.

It is an arithmetic number, because the mean of its divisors is an integer number (1705731686400).

Almost surely, 2^{21443333334412} is an apocalyptic number.

21443333334412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21443333334412 is a deficient number, since it is larger than the sum of its proper divisors (19494227139188).

21443333334412 is a wasteful number, since it uses less digits than its factorization.

21443333334412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425541 (or 3425539 counting only the distinct ones).

The product of its digits is 746496, while the sum is 40.

It can be divided in two parts, 2144333 and 3334412, that added together give a palindrome (5478745).

The spelling of 21443333334412 in words is "twenty-one trillion, four hundred forty-three billion, three hundred thirty-three million, three hundred thirty-four thousand, four hundred twelve".