2221404404 has 12 divisors (see below), whose sum is σ = 3898288800. Its totient is φ = 1107607608.

The previous prime is 2221404389. The next prime is 2221404407. The reversal of 2221404404 is 4044041222.

2221404404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2221404404² = 9869275052221190432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221404404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221404407) 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, 772034 + ... + 774905.

It is an arithmetic number, because the mean of its divisors is an integer number (324857400).

Almost surely, 2^2221404404 is an apocalyptic number.

It is an amenable number.

2221404404 is a deficient number, since it is larger than the sum of its proper divisors (1676884396).

2221404404 is a wasteful number, since it uses less digits than its factorization.

2221404404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547302 (or 1547300 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 2221404404 is about 47131.7770087231. Note that the first 3 decimals coincide. The cubic root of 2221404404 is about 1304.7957782431.

Adding to 2221404404 its reverse (4044041222), we get a palindrome (6265445626).

The spelling of 2221404404 in words is "two billion, two hundred twenty-one million, four hundred four thousand, four hundred four".