21412234424442 has 8 divisors (see below), whose sum is σ = 42824468848896. Its totient is φ = 7137411474812.

The previous prime is 21412234424417. The next prime is 21412234424513. The reversal of 21412234424442 is 24442443221412.

It is a sphenic number, since it is the product of 3 distinct primes.

21412234424442 is an admirable number.

It is a super-2 number, since 2×21412234424442² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21412234424442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1784352868698 + ... + 1784352868709.

It is an arithmetic number, because the mean of its divisors is an integer number (5353058606112).

Almost surely, 2^{21412234424442} is an apocalyptic number.

21412234424442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21412234424442 is a wasteful number, since it uses less digits than its factorization.

21412234424442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568705737412.

The product of its digits is 393216, while the sum is 39.

Adding to 21412234424442 its reverse (24442443221412), we get a palindrome (45854677645854).

The spelling of 21412234424442 in words is "twenty-one trillion, four hundred twelve billion, two hundred thirty-four million, four hundred twenty-four thousand, four hundred forty-two".