11211229 has 2 divisors, whose sum is σ = 11211230. Its totient is φ = 11211228.

The previous prime is 11211217. The next prime is 11211247. The reversal of 11211229 is 92211211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10903204 + 308025 = 3302^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211229 - 2¹³ = 11203037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605614 + 5605615.

It is an arithmetic number, because the mean of its divisors is an integer number (5605615).

Almost surely, 2^11211229 is an apocalyptic number.

It is an amenable number.

11211229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211229 is an equidigital number, since it uses as much as digits as its factorization.

11211229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 19.

The square root of 11211229 is about 3348.3173386046. The cubic root of 11211229 is about 223.8125358114.

The spelling of 11211229 in words is "eleven million, two hundred eleven thousand, two hundred twenty-nine".