11386221 has 24 divisors (see below), whose sum is σ = 19075392. Its totient is φ = 5913600.

The previous prime is 11386213. The next prime is 11386223. The reversal of 11386221 is 12268311.

It is not a de Polignac number, because 11386221 - 2³ = 11386213 is a prime.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 11386191 and 11386200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11386223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301 + ... + 4781.

It is an arithmetic number, because the mean of its divisors is an integer number (794808).

Almost surely, 2^11386221 is an apocalyptic number.

11386221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11386221 is a deficient number, since it is larger than the sum of its proper divisors (7689171).

11386221 is a wasteful number, since it uses less digits than its factorization.

11386221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513 (or 4502 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 11386221 is about 3374.3474924791. The cubic root of 11386221 is about 224.9709987312.

The spelling of 11386221 in words is "eleven million, three hundred eighty-six thousand, two hundred twenty-one".