221204200444 has 6 divisors (see below), whose sum is σ = 387107350784. Its totient is φ = 110602100220.

The previous prime is 221204200417. The next prime is 221204200457. The reversal of 221204200444 is 444002402122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27650525052 + ... + 27650525059.

Almost surely, 2^221204200444 is an apocalyptic number.

It is an amenable number.

221204200444 is a deficient number, since it is larger than the sum of its proper divisors (165903150340).

221204200444 is a wasteful number, since it uses less digits than its factorization.

221204200444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55301050115 (or 55301050113 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 221204200444 its reverse (444002402122), we get a palindrome (665206602566).

The spelling of 221204200444 in words is "two hundred twenty-one billion, two hundred four million, two hundred thousand, four hundred forty-four".