2044220100 has 144 divisors (see below), whose sum is σ = 6397007232. Its totient is φ = 501027840.

The previous prime is 2044220099. The next prime is 2044220111. The reversal of 2044220100 is 10224402.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2044220100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1024704 + ... + 1026696.

Almost surely, 2^2044220100 is an apocalyptic number.

2044220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2044220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3198503616).

2044220100 is an abundant number, since it is smaller than the sum of its proper divisors (4352787132).

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

2044220100 is a wasteful number, since it uses less digits than its factorization.

2044220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2044220100 is about 45213.0523189930. The cubic root of 2044220100 is about 1269.1390821386.

Adding to 2044220100 its reverse (10224402), we get a palindrome (2054444502).

The spelling of 2044220100 in words is "two billion, forty-four million, two hundred twenty thousand, one hundred".