111211202112111 has 24 divisors (see below), whose sum is σ = 162510042296784. Its totient is φ = 73279512345600.

The previous prime is 111211202112089. The next prime is 111211202112139.

111211202112111 is a `hidden beast` number, since 1 + 1 + 121 + 120 + 211 + 211 + 1 = 666.

111211202112111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 111211202112111 - 2¹³ = 111211202103919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211202112151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105493321 + ... + 106542306.

It is an arithmetic number, because the mean of its divisors is an integer number (6771251762366).

Almost surely, 2^{111211202112111} is an apocalyptic number.

111211202112111 is a deficient number, since it is larger than the sum of its proper divisors (51298840184673).

111211202112111 is a wasteful number, since it uses less digits than its factorization.

111211202112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212036311 (or 212036308 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

It can be divided in two parts, 11121120 and 2112111, that added together give a palindrome (13233231).

The spelling of 111211202112111 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred two million, one hundred twelve thousand, one hundred eleven".