221211200330 has 64 divisors (see below), whose sum is σ = 419345488800. Its totient is φ = 83907072000.

The previous prime is 221211200321. The next prime is 221211200341. The reversal of 221211200330 is 33002112122.

It can be written as a sum of positive squares in 16 ways, for example, as 86449524529 + 134761675801 = 294023^2 + 367099^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221211200299 and 221211200308.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 15906380 + ... + 15920280.

Almost surely, 2^221211200330 is an apocalyptic number.

221211200330 is a deficient number, since it is larger than the sum of its proper divisors (198134288470).

221211200330 is a wasteful number, since it uses less digits than its factorization.

221211200330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15035.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221211200330 its reverse (33002112122), we get a palindrome (254213312452).

The spelling of 221211200330 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred thousand, three hundred thirty".