111100210012111 has 16 divisors (see below), whose sum is σ = 114891705828864. Its totient is φ = 107371665127584.

The previous prime is 111100210012093. The next prime is 111100210012171. The reversal of 111100210012111 is 111210012001111.

It is a cyclic number.

It is not a de Polignac number, because 111100210012111 - 2⁹ = 111100210011599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111100210012091 and 111100210012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100210012171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70894750 + ... + 72444916.

It is an arithmetic number, because the mean of its divisors is an integer number (7180731614304).

Almost surely, 2^{111100210012111} is an apocalyptic number.

111100210012111 is a deficient number, since it is larger than the sum of its proper divisors (3791495816753).

111100210012111 is a wasteful number, since it uses less digits than its factorization.

111100210012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570470.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111100210012111 its reverse (111210012001111), we get a palindrome (222310222013222).

The spelling of 111100210012111 in words is "one hundred eleven trillion, one hundred billion, two hundred ten million, twelve thousand, one hundred eleven".