222443121377 has 2 divisors, whose sum is σ = 222443121378. Its totient is φ = 222443121376.

The previous prime is 222443121359. The next prime is 222443121389. The reversal of 222443121377 is 773121344222.

222443121377 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., 201061663201 + 21381458176 = 448399^2 + 146224^2 .

It is a cyclic number.

It is not a de Polignac number, because 222443121377 - 2²⁸ = 222174685921 is a prime.

It is a super-2 number, since 2×222443121377² (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 222443121377.

It is not a weakly prime, because it can be changed into another prime (222443121317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111221560688 + 111221560689.

It is an arithmetic number, because the mean of its divisors is an integer number (111221560689).

Almost surely, 2^222443121377 is an apocalyptic number.

It is an amenable number.

222443121377 is a deficient number, since it is larger than the sum of its proper divisors (1).

222443121377 is an equidigital number, since it uses as much as digits as its factorization.

222443121377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 38.

Adding to 222443121377 its reverse (773121344222), we get a palindrome (995564465599).

The spelling of 222443121377 in words is "two hundred twenty-two billion, four hundred forty-three million, one hundred twenty-one thousand, three hundred seventy-seven".