111220122011077 has 2 divisors, whose sum is σ = 111220122011078. Its totient is φ = 111220122011076.

The previous prime is 111220122011057. The next prime is 111220122011129. The reversal of 111220122011077 is 770110221022111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76853959356321 + 34366162654756 = 8766639^2 + 5862266^2 .

It is an emirp because it is prime and its reverse (770110221022111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111220122011077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111220122011027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610061005538 + 55610061005539.

It is an arithmetic number, because the mean of its divisors is an integer number (55610061005539).

Almost surely, 2^{111220122011077} is an apocalyptic number.

It is an amenable number.

111220122011077 is a deficient number, since it is larger than the sum of its proper divisors (1).

111220122011077 is an equidigital number, since it uses as much as digits as its factorization.

111220122011077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 28.

Adding to 111220122011077 its reverse (770110221022111), we get a palindrome (881330343033188).

The spelling of 111220122011077 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred twenty-two million, eleven thousand, seventy-seven".