2221020304 has 20 divisors (see below), whose sum is σ = 4313970540. Its totient is φ = 1107737600.

The previous prime is 2221020287. The next prime is 2221020313. The reversal of 2221020304 is 4030201222.

It can be written as a sum of positive squares in 2 ways, for example, as 2190240000 + 30780304 = 46800^2 + 5548^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166669 + ... + 179500.

It is an arithmetic number, because the mean of its divisors is an integer number (215698527).

Almost surely, 2^2221020304 is an apocalyptic number.

It is an amenable number.

2221020304 is a deficient number, since it is larger than the sum of its proper divisors (2092950236).

2221020304 is a wasteful number, since it uses less digits than its factorization.

2221020304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346578 (or 346572 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2221020304 is about 47127.7020869891. The cubic root of 2221020304 is about 1304.7205704232.

Adding to 2221020304 its reverse (4030201222), we get a palindrome (6251221526).

The spelling of 2221020304 in words is "two billion, two hundred twenty-one million, twenty thousand, three hundred four".