21424422442412 has 12 divisors (see below), whose sum is σ = 40901170117416. Its totient is φ = 9738373837440.

The previous prime is 21424422442369. The next prime is 21424422442427.

21424422442412 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243459345893 + ... + 243459345980.

It is an arithmetic number, because the mean of its divisors is an integer number (3408430843118).

Almost surely, 2^{21424422442412} is an apocalyptic number.

21424422442412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21424422442412 is a deficient number, since it is larger than the sum of its proper divisors (19476747675004).

21424422442412 is a wasteful number, since it uses less digits than its factorization.

21424422442412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486918691888 (or 486918691886 counting only the distinct ones).

The product of its digits is 262144, while the sum is 38.

It can be divided in two parts, 2142442 and 2442412, that added together give a palindrome (4584854).

The spelling of 21424422442412 in words is "twenty-one trillion, four hundred twenty-four billion, four hundred twenty-two million, four hundred forty-two thousand, four hundred twelve".