1220001110444 has 24 divisors (see below), whose sum is σ = 2179315389888. Its totient is φ = 597425408640.

The previous prime is 1220001110441. The next prime is 1220001110473. The reversal of 1220001110444 is 4440111000221.

It is not an unprimeable number, because it can be changed into a prime (1220001110441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10672772 + ... + 10786475.

It is an arithmetic number, because the mean of its divisors is an integer number (90804807912).

Almost surely, 2^{1220001110444} is an apocalyptic number.

It is an amenable number.

1220001110444 is a deficient number, since it is larger than the sum of its proper divisors (959314279444).

1220001110444 is a wasteful number, since it uses less digits than its factorization.

1220001110444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21459545 (or 21459543 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1220001110444 its reverse (4440111000221), we get a palindrome (5660112110665).

The spelling of 1220001110444 in words is "one trillion, two hundred twenty billion, one million, one hundred ten thousand, four hundred forty-four".