111100221022111 has 2 divisors, whose sum is σ = 111100221022112. Its totient is φ = 111100221022110.

The previous prime is 111100221022079. The next prime is 111100221022123. The reversal of 111100221022111 is 111220122001111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111100221022111 - 2⁵ = 111100221022079 is a prime.

It is a super-2 number, since 2×111100221022111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111100221022211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550110511055 + 55550110511056.

It is an arithmetic number, because the mean of its divisors is an integer number (55550110511056).

Almost surely, 2^{111100221022111} is an apocalyptic number.

111100221022111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100221022111 is an equidigital number, since it uses as much as digits as its factorization.

111100221022111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 111100221022111 its reverse (111220122001111), we get a palindrome (222320343023222).

The spelling of 111100221022111 in words is "one hundred eleven trillion, one hundred billion, two hundred twenty-one million, twenty-two thousand, one hundred eleven".