222112211081 has 2 divisors, whose sum is σ = 222112211082. Its totient is φ = 222112211080.

The previous prime is 222112211033. The next prime is 222112211093. The reversal of 222112211081 is 180112211222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221950285456 + 161925625 = 471116^2 + 12725^2 .

It is a cyclic number.

It is not a de Polignac number, because 222112211081 - 2⁶ = 222112211017 is a prime.

It is a super-3 number, since 3×222112211081³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (222112211021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111056105540 + 111056105541.

It is an arithmetic number, because the mean of its divisors is an integer number (111056105541).

Almost surely, 2^222112211081 is an apocalyptic number.

It is an amenable number.

222112211081 is a deficient number, since it is larger than the sum of its proper divisors (1).

222112211081 is an equidigital number, since it uses as much as digits as its factorization.

222112211081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 23.

The spelling of 222112211081 in words is "two hundred twenty-two billion, one hundred twelve million, two hundred eleven thousand, eighty-one".