11229111 has 20 divisors (see below), whose sum is σ = 16900312. Its totient is φ = 7429968.

The previous prime is 11229109. The next prime is 11229143. The reversal of 11229111 is 11192211.

It is a happy number.

It is not a de Polignac number, because 11229111 - 2¹ = 11229109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11229151) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12276 + ... + 13158.

Almost surely, 2^11229111 is an apocalyptic number.

11229111 is a deficient number, since it is larger than the sum of its proper divisors (5671201).

11229111 is an equidigital number, since it uses as much as digits as its factorization.

11229111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1043 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

The square root of 11229111 is about 3350.9865711459. The cubic root of 11229111 is about 223.9314668638.

The spelling of 11229111 in words is "eleven million, two hundred twenty-nine thousand, one hundred eleven".