111012022081 has 2 divisors, whose sum is σ = 111012022082. Its totient is φ = 111012022080.

The previous prime is 111012022073. The next prime is 111012022153. The reversal of 111012022081 is 180220210111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107626644225 + 3385377856 = 328065^2 + 58184^2 .

It is a cyclic number.

It is not a de Polignac number, because 111012022081 - 2³ = 111012022073 is a prime.

It is a super-2 number, since 2×111012022081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111012022021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506011040 + 55506011041.

It is an arithmetic number, because the mean of its divisors is an integer number (55506011041).

Almost surely, 2^111012022081 is an apocalyptic number.

It is an amenable number.

111012022081 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012022081 is an equidigital number, since it uses as much as digits as its factorization.

111012022081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111012022081 its reverse (180220210111), we get a palindrome (291232232192).

The spelling of 111012022081 in words is "one hundred eleven billion, twelve million, twenty-two thousand, eighty-one".