222120212201 has 2 divisors, whose sum is σ = 222120212202. Its totient is φ = 222120212200.

The previous prime is 222120212189. The next prime is 222120212207. The reversal of 222120212201 is 102212021222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164604661225 + 57515550976 = 405715^2 + 239824^2 .

It is a cyclic number.

It is not a de Polignac number, because 222120212201 - 2¹⁸ = 222119950057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222120212201.

It is not a weakly prime, because it can be changed into another prime (222120212207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060106100 + 111060106101.

It is an arithmetic number, because the mean of its divisors is an integer number (111060106101).

Almost surely, 2^222120212201 is an apocalyptic number.

It is an amenable number.

222120212201 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120212201 is an equidigital number, since it uses as much as digits as its factorization.

222120212201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222120212201 its reverse (102212021222), we get a palindrome (324332233423).

The spelling of 222120212201 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twelve thousand, two hundred one".