1100020044 has 12 divisors (see below), whose sum is σ = 2566713464. Its totient is φ = 366673344.

The previous prime is 1100020039. The next prime is 1100020063. The reversal of 1100020044 is 4400200011.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 91668337 = 1100020044 / (1 + 1 + 0 + 0 + 0 + 2 + 0 + 0 + 4 + 4).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45834157 + ... + 45834180.

Almost surely, 2^1100020044 is an apocalyptic number.

It is an amenable number.

1100020044 is an abundant number, since it is smaller than the sum of its proper divisors (1466693420).

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

1100020044 is a wasteful number, since it uses less digits than its factorization.

1100020044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91668344 (or 91668342 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1100020044 is about 33166.5500768470. The cubic root of 1100020044 is about 1032.2863854251.

Adding to 1100020044 its reverse (4400200011), we get a palindrome (5500220055).

The spelling of 1100020044 in words is "one billion, one hundred million, twenty thousand, forty-four".