111111100112111 has 8 divisors (see below), whose sum is σ = 121218038730624. Its totient is φ = 101005149746520.

The previous prime is 111111100112107. The next prime is 111111100112147. The reversal of 111111100112111 is 111211001111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111111100112111 - 2² = 111111100112107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111100112171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246828131 + ... + 247277876.

It is an arithmetic number, because the mean of its divisors is an integer number (15152254841328).

Almost surely, 2^{111111100112111} is an apocalyptic number.

111111100112111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111111100112111 is a deficient number, since it is larger than the sum of its proper divisors (10106938618513).

111111100112111 is a wasteful number, since it uses less digits than its factorization.

111111100112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494126461.

The product of its (nonzero) digits is 2, while the sum is 14.

Adding to 111111100112111 its reverse (111211001111111), we get a palindrome (222322101223222).

The spelling of 111111100112111 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, one hundred twelve thousand, one hundred eleven".