222201212117 has 2 divisors, whose sum is σ = 222201212118. Its totient is φ = 222201212116.

The previous prime is 222201212111. The next prime is 222201212173. The reversal of 222201212117 is 711212102222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216598090801 + 5603121316 = 465401^2 + 74854^2 .

It is a cyclic number.

It is not a de Polignac number, because 222201212117 - 2⁸ = 222201211861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222201212092 and 222201212101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222201212111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111100606058 + 111100606059.

It is an arithmetic number, because the mean of its divisors is an integer number (111100606059).

Almost surely, 2^222201212117 is an apocalyptic number.

It is an amenable number.

222201212117 is a deficient number, since it is larger than the sum of its proper divisors (1).

222201212117 is an equidigital number, since it uses as much as digits as its factorization.

222201212117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 222201212117 its reverse (711212102222), we get a palindrome (933413314339).

The spelling of 222201212117 in words is "two hundred twenty-two billion, two hundred one million, two hundred twelve thousand, one hundred seventeen".