220200201221 has 64 divisors (see below), whose sum is σ = 314349590016. Its totient is φ = 148447641600.

The previous prime is 220200201203. The next prime is 220200201233. The reversal of 220200201221 is 122102002022.

It is a cyclic number.

It is not a de Polignac number, because 220200201221 - 2¹⁴ = 220200184837 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220200201196 and 220200201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220200201241) 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 63 ways as a sum of consecutive naturals, for example, 4074251 + ... + 4127943.

It is an arithmetic number, because the mean of its divisors is an integer number (4911712344).

Almost surely, 2^220200201221 is an apocalyptic number.

It is an amenable number.

220200201221 is a deficient number, since it is larger than the sum of its proper divisors (94149388795).

220200201221 is a wasteful number, since it uses less digits than its factorization.

220200201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53982.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220200201221 its reverse (122102002022), we get a palindrome (342302203243).

The spelling of 220200201221 in words is "two hundred twenty billion, two hundred million, two hundred one thousand, two hundred twenty-one".