111222022220077 has 2 divisors, whose sum is σ = 111222022220078. Its totient is φ = 111222022220076.

The previous prime is 111222022219999. The next prime is 111222022220161. The reversal of 111222022220077 is 770022220222111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101846263955881 + 9375758264196 = 10091891^2 + 3061986^2 .

It is an emirp because it is prime and its reverse (770022220222111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111222022220077 - 2⁴³ = 102425929197869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111222022220377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611011110038 + 55611011110039.

It is an arithmetic number, because the mean of its divisors is an integer number (55611011110039).

Almost surely, 2^{111222022220077} is an apocalyptic number.

It is an amenable number.

111222022220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222022220077 is an equidigital number, since it uses as much as digits as its factorization.

111222022220077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 31.

Adding to 111222022220077 its reverse (770022220222111), we get a palindrome (881244242442188).

The spelling of 111222022220077 in words is "one hundred eleven trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty thousand, seventy-seven".