111201131112111 has 24 divisors (see below), whose sum is σ = 170286494312064. Its totient is φ = 69803674274880.

The previous prime is 111201131112107. The next prime is 111201131112121. The reversal of 111201131112111 is 111211131102111.

It is a happy number.

111201131112111 is a `hidden beast` number, since 11 + 120 + 11 + 311 + 1 + 211 + 1 = 666.

It is not a de Polignac number, because 111201131112111 - 2² = 111201131112107 is a prime.

It is a super-2 number, since 2×111201131112111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201131112121) 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, 5386075656 + ... + 5386096301.

It is an arithmetic number, because the mean of its divisors is an integer number (7095270596336).

Almost surely, 2^{111201131112111} is an apocalyptic number.

111201131112111 is a deficient number, since it is larger than the sum of its proper divisors (59085363199953).

111201131112111 is a wasteful number, since it uses less digits than its factorization.

111201131112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10772172031 (or 10772172028 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 18.

Adding to 111201131112111 its reverse (111211131102111), we get a palindrome (222412262214222).

The spelling of 111201131112111 in words is "one hundred eleven trillion, two hundred one billion, one hundred thirty-one million, one hundred twelve thousand, one hundred eleven".