221466242404 has 27 divisors (see below), whose sum is σ = 426022130163. Its totient is φ = 100661767800.

The previous prime is 221466242383. The next prime is 221466242441. The reversal of 221466242404 is 404242664122.

The square root of 221466242404 is 470602.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10342549 + ... + 10363939.

Almost surely, 2^221466242404 is an apocalyptic number.

221466242404 is the 470602-nd square number.

It is an amenable number.

221466242404 is a deficient number, since it is larger than the sum of its proper divisors (204555887759).

221466242404 is an frugal number, since it uses more digits than its factorization.

221466242404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42808 (or 21404 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 37.

The spelling of 221466242404 in words is "two hundred twenty-one billion, four hundred sixty-six million, two hundred forty-two thousand, four hundred four".