222122111221117 has 2 divisors, whose sum is σ = 222122111221118. Its totient is φ = 222122111221116.

The previous prime is 222122111221079. The next prime is 222122111221159. The reversal of 222122111221117 is 711122111221222.

222122111221117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220100101164441 + 2022010056676 = 14835771^2 + 1421974^2 .

It is a cyclic number.

It is not a de Polignac number, because 222122111221117 - 2¹¹ = 222122111219069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222122111225117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061055610558 + 111061055610559.

It is an arithmetic number, because the mean of its divisors is an integer number (111061055610559).

Almost surely, 2^{222122111221117} is an apocalyptic number.

It is an amenable number.

222122111221117 is a deficient number, since it is larger than the sum of its proper divisors (1).

222122111221117 is an equidigital number, since it uses as much as digits as its factorization.

222122111221117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 28.

Adding to 222122111221117 its reverse (711122111221222), we get a palindrome (933244222442339).

The spelling of 222122111221117 in words is "two hundred twenty-two trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred seventeen".