221202223201 has 4 divisors (see below), whose sum is σ = 228829886100. Its totient is φ = 213574560304.

The previous prime is 221202223189. The next prime is 221202223247. The reversal of 221202223201 is 102322202122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129560403025 + 91641820176 = 359945^2 + 302724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221202223201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221202223601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3813831406 + ... + 3813831463.

It is an arithmetic number, because the mean of its divisors is an integer number (57207471525).

Almost surely, 2^221202223201 is an apocalyptic number.

It is an amenable number.

221202223201 is a deficient number, since it is larger than the sum of its proper divisors (7627662899).

221202223201 is an equidigital number, since it uses as much as digits as its factorization.

221202223201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7627662898.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 221202223201 its reverse (102322202122), we get a palindrome (323524425323).

The spelling of 221202223201 in words is "two hundred twenty-one billion, two hundred two million, two hundred twenty-three thousand, two hundred one".