111102121112111 has 4 divisors (see below), whose sum is σ = 111104203562352. Its totient is φ = 111100038661872.

The previous prime is 111102121112057. The next prime is 111102121112137. The reversal of 111102121112111 is 111211121201111.

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 111102121112111 - 2¹⁴ = 111102121095727 is a prime.

It is a super-2 number, since 2×111102121112111² (a number of 29 digits) contains 22 as substring.

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 111102121112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102121112161) 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, 1041145091 + ... + 1041251796.

It is an arithmetic number, because the mean of its divisors is an integer number (27776050890588).

Almost surely, 2^{111102121112111} is an apocalyptic number.

111102121112111 is a deficient number, since it is larger than the sum of its proper divisors (2082450241).

111102121112111 is an equidigital number, since it uses as much as digits as its factorization.

111102121112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082450240.

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

Adding to 111102121112111 its reverse (111211121201111), we get a palindrome (222313242313222).

The spelling of 111102121112111 in words is "one hundred eleven trillion, one hundred two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred eleven".