222211117 has 2 divisors, whose sum is σ = 222211118. Its totient is φ = 222211116.

The previous prime is 222211081. The next prime is 222211127. The reversal of 222211117 is 711112222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165148201 + 57062916 = 12851^2 + 7554^2 .

It is a cyclic number.

It is not a de Polignac number, because 222211117 - 2¹⁵ = 222178349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222211094 and 222211103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222211127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111105558 + 111105559.

It is an arithmetic number, because the mean of its divisors is an integer number (111105559).

Almost surely, 2^222211117 is an apocalyptic number.

It is an amenable number.

222211117 is a deficient number, since it is larger than the sum of its proper divisors (1).

222211117 is an equidigital number, since it uses as much as digits as its factorization.

222211117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112, while the sum is 19.

The square root of 222211117 is about 14906.7473648680. The cubic root of 222211117 is about 605.6967743453.

Adding to 222211117 its reverse (711112222), we get a palindrome (933323339).

The spelling of 222211117 in words is "two hundred twenty-two million, two hundred eleven thousand, one hundred seventeen".