222211081 has 2 divisors, whose sum is σ = 222211082. Its totient is φ = 222211080.

The previous prime is 222211037. The next prime is 222211117. The reversal of 222211081 is 180112222.

222211081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216354681 + 5856400 = 14709^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 222211081 - 2⁷ = 222210953 is a prime.

It is a super-3 number, since 3×222211081³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222211181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111105540 + 111105541.

It is an arithmetic number, because the mean of its divisors is an integer number (111105541).

Almost surely, 2^222211081 is an apocalyptic number.

It is an amenable number.

222211081 is a deficient number, since it is larger than the sum of its proper divisors (1).

222211081 is an equidigital number, since it uses as much as digits as its factorization.

222211081 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 19.

The square root of 222211081 is about 14906.7461573611. The cubic root of 222211081 is about 605.6967416360.

The spelling of 222211081 in words is "two hundred twenty-two million, two hundred eleven thousand, eighty-one".