21442030420012 has 24 divisors (see below), whose sum is σ = 38543325345504. Its totient is φ = 10429736291712.

The previous prime is 21442030419923. The next prime is 21442030420067. The reversal of 21442030420012 is 21002403024412.

It is an unprimeable number.

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, 9549448 + ... + 11579119.

It is an arithmetic number, because the mean of its divisors is an integer number (1605971889396).

Almost surely, 2^{21442030420012} is an apocalyptic number.

It is an amenable number.

21442030420012 is a deficient number, since it is larger than the sum of its proper divisors (17101294925492).

21442030420012 is a wasteful number, since it uses less digits than its factorization.

21442030420012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21135465 (or 21135463 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21442030420012 its reverse (21002403024412), we get a palindrome (42444433444424).

The spelling of 21442030420012 in words is "twenty-one trillion, four hundred forty-two billion, thirty million, four hundred twenty thousand, twelve".