11271229 has 2 divisors, whose sum is σ = 11271230. Its totient is φ = 11271228.

The previous prime is 11271223. The next prime is 11271251. The reversal of 11271229 is 92217211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11088900 + 182329 = 3330^2 + 427^2 .

It is a cyclic number.

It is not a de Polignac number, because 11271229 - 2⁹ = 11270717 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11271223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5635614 + 5635615.

It is an arithmetic number, because the mean of its divisors is an integer number (5635615).

Almost surely, 2^11271229 is an apocalyptic number.

It is an amenable number.

11271229 is a deficient number, since it is larger than the sum of its proper divisors (1).

11271229 is an equidigital number, since it uses as much as digits as its factorization.

11271229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 25.

The square root of 11271229 is about 3357.2651071966. The cubic root of 11271229 is about 224.2110906063.

The spelling of 11271229 in words is "eleven million, two hundred seventy-one thousand, two hundred twenty-nine".