4221401312444 has 24 divisors (see below), whose sum is σ = 7512842095248. Its totient is φ = 2074914483840.

The previous prime is 4221401312399. The next prime is 4221401312459. The reversal of 4221401312444 is 4442131041224.

It is a self number, because there is not a number n which added to its sum of digits gives 4221401312444.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4506902 + ... + 5362365.

It is an arithmetic number, because the mean of its divisors is an integer number (313035087302).

Almost surely, 2^{4221401312444} is an apocalyptic number.

It is an amenable number.

4221401312444 is a deficient number, since it is larger than the sum of its proper divisors (3291440782804).

4221401312444 is a wasteful number, since it uses less digits than its factorization.

4221401312444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9871085 (or 9871083 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 4221401312444 its reverse (4442131041224), we get a palindrome (8663532353668).

The spelling of 4221401312444 in words is "four trillion, two hundred twenty-one billion, four hundred one million, three hundred twelve thousand, four hundred forty-four".