2220355444 has 12 divisors (see below), whose sum is σ = 3938850244. Its totient is φ = 1094969664.

The previous prime is 2220355441. The next prime is 2220355463. The reversal of 2220355444 is 4445530222.

It can be written as a sum of positive squares in 2 ways, for example, as 1427932944 + 792422500 = 37788^2 + 28150^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220355441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3801687 + ... + 3802270.

Almost surely, 2^2220355444 is an apocalyptic number.

It is an amenable number.

2220355444 is a deficient number, since it is larger than the sum of its proper divisors (1718494800).

2220355444 is a wasteful number, since it uses less digits than its factorization.

2220355444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7604034 (or 7604032 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 2220355444 is about 47120.6477459723. The cubic root of 2220355444 is about 1304.5903685383.

Adding to 2220355444 its reverse (4445530222), we get a palindrome (6665885666).

The spelling of 2220355444 in words is "two billion, two hundred twenty million, three hundred fifty-five thousand, four hundred forty-four".