11266221 has 16 divisors (see below), whose sum is σ = 15897600. Its totient is φ = 7077168.

The previous prime is 11266219. The next prime is 11266253. The reversal of 11266221 is 12266211.

It is not a de Polignac number, because 11266221 - 2¹ = 11266219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11266201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13210 + ... + 14036.

It is an arithmetic number, because the mean of its divisors is an integer number (993600).

Almost surely, 2^11266221 is an apocalyptic number.

It is an amenable number.

11266221 is a deficient number, since it is larger than the sum of its proper divisors (4631379).

11266221 is a wasteful number, since it uses less digits than its factorization.

11266221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088.

The product of its digits is 288, while the sum is 21.

The square root of 11266221 is about 3356.5191791497. The cubic root of 11266221 is about 224.1778787450.

The spelling of 11266221 in words is "eleven million, two hundred sixty-six thousand, two hundred twenty-one".