221200244546 has 16 divisors (see below), whose sum is σ = 349806760800. Its totient is φ = 104616098208.

The previous prime is 221200244497. The next prime is 221200244563. The reversal of 221200244546 is 645442002122.

221200244546 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 2×221200244546² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4502051 + ... + 4550918.

It is an arithmetic number, because the mean of its divisors is an integer number (21862922550).

Almost surely, 2^221200244546 is an apocalyptic number.

221200244546 is a deficient number, since it is larger than the sum of its proper divisors (128606516254).

221200244546 is a wasteful number, since it uses less digits than its factorization.

221200244546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9053633.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 221200244546 its reverse (645442002122), we get a palindrome (866642246668).

The spelling of 221200244546 in words is "two hundred twenty-one billion, two hundred million, two hundred forty-four thousand, five hundred forty-six".