222122321081 has 2 divisors, whose sum is σ = 222122321082. Its totient is φ = 222122321080.

The previous prime is 222122321027. The next prime is 222122321111. The reversal of 222122321081 is 180123221222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200341284025 + 21781037056 = 447595^2 + 147584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222122321081 is a prime.

It is a super-2 number, since 2×222122321081² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222122321081.

It is not a weakly prime, because it can be changed into another prime (222122321581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061160540 + 111061160541.

It is an arithmetic number, because the mean of its divisors is an integer number (111061160541).

Almost surely, 2^222122321081 is an apocalyptic number.

It is an amenable number.

222122321081 is a deficient number, since it is larger than the sum of its proper divisors (1).

222122321081 is an equidigital number, since it uses as much as digits as its factorization.

222122321081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 26.

The spelling of 222122321081 in words is "two hundred twenty-two billion, one hundred twenty-two million, three hundred twenty-one thousand, eighty-one".