2122780444 has 12 divisors (see below), whose sum is σ = 3759623784. Its totient is φ = 1048602224.

The previous prime is 2122780417. The next prime is 2122780447. The reversal of 2122780444 is 4440872212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122780447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3196627 + ... + 3197290.

It is an arithmetic number, because the mean of its divisors is an integer number (313301982).

Almost surely, 2^2122780444 is an apocalyptic number.

It is an amenable number.

2122780444 is a deficient number, since it is larger than the sum of its proper divisors (1636843340).

2122780444 is a wasteful number, since it uses less digits than its factorization.

2122780444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6394004 (or 6394002 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 34.

The square root of 2122780444 is about 46073.6415317913. The cubic root of 2122780444 is about 1285.1930234347.

The spelling of 2122780444 in words is "two billion, one hundred twenty-two million, seven hundred eighty thousand, four hundred forty-four".