2221214400444 has 144 divisors (see below), whose sum is σ = 5925440330880. Its totient is φ = 645519663360.

The previous prime is 2221214400443. The next prime is 2221214400479. The reversal of 2221214400444 is 4440044121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221214400443) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 12667014 + ... + 12841170.

Almost surely, 2^{2221214400444} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221214400444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2962720165440).

2221214400444 is an abundant number, since it is smaller than the sum of its proper divisors (3704225930436).

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

2221214400444 is a wasteful number, since it uses less digits than its factorization.

2221214400444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174540 (or 174525 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 2221214400444 its reverse (4440044121222), we get a palindrome (6661258521666).

The spelling of 2221214400444 in words is "two trillion, two hundred twenty-one billion, two hundred fourteen million, four hundred thousand, four hundred forty-four".