2221023404 has 6 divisors (see below), whose sum is σ = 3886790964. Its totient is φ = 1110511700.

The previous prime is 2221023331. The next prime is 2221023407. The reversal of 2221023404 is 4043201222.

It is a super-2 number, since 2×2221023404² = 9865889922231494432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2221023407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277627922 + ... + 277627929.

It is an arithmetic number, because the mean of its divisors is an integer number (647798494).

Almost surely, 2^2221023404 is an apocalyptic number.

It is an amenable number.

2221023404 is a deficient number, since it is larger than the sum of its proper divisors (1665767560).

2221023404 is a wasteful number, since it uses less digits than its factorization.

2221023404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555255855 (or 555255853 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2221023404 is about 47127.7349763385. The cubic root of 2221023404 is about 1304.7211774463.

Adding to 2221023404 its reverse (4043201222), we get a palindrome (6264224626).

The spelling of 2221023404 in words is "two billion, two hundred twenty-one million, twenty-three thousand, four hundred four".