2221145404 has 24 divisors (see below), whose sum is σ = 4165248528. Its totient is φ = 1032648960.

The previous prime is 2221145401. The next prime is 2221145413. The reversal of 2221145404 is 4045411222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221145401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191127 + ... + 202414.

It is an arithmetic number, because the mean of its divisors is an integer number (173552022).

Almost surely, 2^2221145404 is an apocalyptic number.

It is an amenable number.

2221145404 is a deficient number, since it is larger than the sum of its proper divisors (1944103124).

2221145404 is a wasteful number, since it uses less digits than its factorization.

2221145404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393645 (or 393643 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2221145404 is about 47129.0293131526. The cubic root of 2221145404 is about 1304.7450662940.

Adding to 2221145404 its reverse (4045411222), we get a palindrome (6266556626).

The spelling of 2221145404 in words is "two billion, two hundred twenty-one million, one hundred forty-five thousand, four hundred four".