11001120111 has 32 divisors (see below), whose sum is σ = 16545177600. Its totient is φ = 7223670720.

The previous prime is 11001120107. The next prime is 11001120173. The reversal of 11001120111 is 11102110011.

It is not a de Polignac number, because 11001120111 - 2² = 11001120107 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 = 11001120093 and 11001120102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001120191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 465091 + ... + 488171.

It is an arithmetic number, because the mean of its divisors is an integer number (517036800).

Almost surely, 2^11001120111 is an apocalyptic number.

11001120111 is a deficient number, since it is larger than the sum of its proper divisors (5544057489).

11001120111 is a wasteful number, since it uses less digits than its factorization.

11001120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23356 (or 23350 counting only the distinct ones).

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

Adding to 11001120111 its reverse (11102110011), we get a palindrome (22103230122).

It can be divided in two parts, 1100 and 1120111, that added together give a palindrome (1121211).

The spelling of 11001120111 in words is "eleven billion, one million, one hundred twenty thousand, one hundred eleven".