220201222221 has 64 divisors (see below), whose sum is σ = 334432573440. Its totient is φ = 143165491200.

The previous prime is 220201222193. The next prime is 220201222237. The reversal of 220201222221 is 122222102022.

220201222221 is a `hidden beast` number, since 2 + 20 + 201 + 222 + 221 = 666.

It is not a de Polignac number, because 220201222221 - 2¹⁴ = 220201205837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220201222194 and 220201222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220201222271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58985871 + ... + 58989603.

It is an arithmetic number, because the mean of its divisors is an integer number (5225508960).

Almost surely, 2^220201222221 is an apocalyptic number.

It is an amenable number.

220201222221 is a deficient number, since it is larger than the sum of its proper divisors (114231351219).

220201222221 is a wasteful number, since it uses less digits than its factorization.

220201222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163 (or 4157 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 220201222221 its reverse (122222102022), we get a palindrome (342423324243).

The spelling of 220201222221 in words is "two hundred twenty billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty-one".