111022111211111 has 4 divisors (see below), whose sum is σ = 117552823635312. Its totient is φ = 104491398786912.

The previous prime is 111022111211057. The next prime is 111022111211119. The reversal of 111022111211111 is 111112111220111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111022111211111 - 2³⁸ = 110747233304167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 6530712424183 = 111022111211111 / (1 + 1 + 1 + 0 + 2 + 2 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111022111211111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111022111211119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3265356212075 + ... + 3265356212108.

It is an arithmetic number, because the mean of its divisors is an integer number (29388205908828).

Almost surely, 2^{111022111211111} is an apocalyptic number.

111022111211111 is a deficient number, since it is larger than the sum of its proper divisors (6530712424201).

111022111211111 is an equidigital number, since it uses as much as digits as its factorization.

111022111211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6530712424200.

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 111022111211111 its reverse (111112111220111), we get a palindrome (222134222431222).

The spelling of 111022111211111 in words is "one hundred eleven trillion, twenty-two billion, one hundred eleven million, two hundred eleven thousand, one hundred eleven".