100111211110111 has 4 divisors (see below), whose sum is σ = 106000105881312. Its totient is φ = 94222316338912.

The previous prime is 100111211109967. The next prime is 100111211110133. The reversal of 100111211110111 is 111011112111001.

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 100111211110111 - 2¹⁹ = 100111210585823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100111211110091 and 100111211110100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111211110151) 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, 2944447385575 + ... + 2944447385608.

It is an arithmetic number, because the mean of its divisors is an integer number (26500026470328).

Almost surely, 2^{100111211110111} is an apocalyptic number.

100111211110111 is a deficient number, since it is larger than the sum of its proper divisors (5888894771201).

100111211110111 is an equidigital number, since it uses as much as digits as its factorization.

100111211110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5888894771200.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 100111211110111 its reverse (111011112111001), we get a palindrome (211122323221112).

The spelling of 100111211110111 in words is "one hundred trillion, one hundred eleven billion, two hundred eleven million, one hundred ten thousand, one hundred eleven".