2220220444 has 24 divisors (see below), whose sum is σ = 4185675648. Its totient is φ = 1024370880.

The previous prime is 2220220439. The next prime is 2220220459. The reversal of 2220220444 is 4440220222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211029 + ... + 221299.

It is an arithmetic number, because the mean of its divisors is an integer number (174403152).

Almost surely, 2^2220220444 is an apocalyptic number.

It is an amenable number.

2220220444 is a deficient number, since it is larger than the sum of its proper divisors (1965455204).

2220220444 is a wasteful number, since it uses less digits than its factorization.

2220220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14445 (or 14443 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 2220220444 is about 47119.2152311560. The cubic root of 2220220444 is about 1304.5639278364.

Adding to 2220220444 its reverse (4440220222), we get a palindrome (6660440666).

The spelling of 2220220444 in words is "two billion, two hundred twenty million, two hundred twenty thousand, four hundred forty-four".