222221201 has 2 divisors, whose sum is σ = 222221202. Its totient is φ = 222221200.

The previous prime is 222221183. The next prime is 222221221. The reversal of 222221201 is 102122222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124902976 + 97318225 = 11176^2 + 9865^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221201 - 2⁶ = 222221137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222221221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110600 + 111110601.

It is an arithmetic number, because the mean of its divisors is an integer number (111110601).

Almost surely, 2^222221201 is an apocalyptic number.

It is an amenable number.

222221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221201 is an equidigital number, since it uses as much as digits as its factorization.

222221201 is an evil number, because the sum of its binary digits is even.

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

The square root of 222221201 is about 14907.0855971246. The cubic root of 222221201 is about 605.7059364340.

Adding to 222221201 its reverse (102122222), we get a palindrome (324343423).

The spelling of 222221201 in words is "two hundred twenty-two million, two hundred twenty-one thousand, two hundred one".