111222022061 has 2 divisors, whose sum is σ = 111222022062. Its totient is φ = 111222022060.

The previous prime is 111222022013. The next prime is 111222022097. The reversal of 111222022061 is 160220222111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87669288100 + 23552733961 = 296090^2 + 153469^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222022061 - 2⁶ = 111222021997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111222222061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611011030 + 55611011031.

It is an arithmetic number, because the mean of its divisors is an integer number (55611011031).

Almost surely, 2^111222022061 is an apocalyptic number.

It is an amenable number.

111222022061 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222022061 is an equidigital number, since it uses as much as digits as its factorization.

111222022061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 111222022061 its reverse (160220222111), we get a palindrome (271442244172).

The spelling of 111222022061 in words is "one hundred eleven billion, two hundred twenty-two million, twenty-two thousand, sixty-one".