2120220444 has 24 divisors (see below), whose sum is σ = 4949093520. Its totient is φ = 706466944.

The previous prime is 2120220409. The next prime is 2120220457. The reversal of 2120220444 is 4440220212.

It is a self number, because there is not a number n which added to its sum of digits gives 2120220444.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 489 + ... + 65120.

It is an arithmetic number, because the mean of its divisors is an integer number (206212230).

Almost surely, 2^2120220444 is an apocalyptic number.

It is an amenable number.

2120220444 is an abundant number, since it is smaller than the sum of its proper divisors (2828873076).

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

2120220444 is a wasteful number, since it uses less digits than its factorization.

2120220444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68309 (or 68307 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 2120220444 is about 46045.8515395253. The cubic root of 2120220444 is about 1284.6761827952.

Adding to 2120220444 its reverse (4440220212), we get a palindrome (6560440656).

The spelling of 2120220444 in words is "two billion, one hundred twenty million, two hundred twenty thousand, four hundred forty-four".