10111200111 has 28 divisors (see below), whose sum is σ = 15294147888. Its totient is φ = 6681092544.

The previous prime is 10111200101. The next prime is 10111200139. The reversal of 10111200111 is 11100211101.

It is not a de Polignac number, because 10111200111 - 2²⁷ = 9976982383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 10111200093 and 10111200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111200101) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 21006 + ... + 143748.

Almost surely, 2^10111200111 is an apocalyptic number.

10111200111 is a deficient number, since it is larger than the sum of its proper divisors (5182947777).

10111200111 is an equidigital number, since it uses as much as digits as its factorization.

10111200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122874 (or 122859 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 10111200111 its reverse (11100211101), we get a palindrome (21211411212).

The spelling of 10111200111 in words is "ten billion, one hundred eleven million, two hundred thousand, one hundred eleven".