11187229 has 2 divisors, whose sum is σ = 11187230. Its totient is φ = 11187228.

The previous prime is 11187227. The next prime is 11187271. The reversal of 11187229 is 92278111.

11187229 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6002500 + 5184729 = 2450^2 + 2277^2 .

It is a cyclic number.

It is not a de Polignac number, because 11187229 - 2¹ = 11187227 is a prime.

Together with 11187227, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11187229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11187221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5593614 + 5593615.

It is an arithmetic number, because the mean of its divisors is an integer number (5593615).

Almost surely, 2^11187229 is an apocalyptic number.

It is an amenable number.

11187229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11187229 is an equidigital number, since it uses as much as digits as its factorization.

11187229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 31.

The square root of 11187229 is about 3344.7315288376. The cubic root of 11187229 is about 223.6527157367.

The spelling of 11187229 in words is "eleven million, one hundred eighty-seven thousand, two hundred twenty-nine".