11836221 has 8 divisors (see below), whose sum is σ = 16612320. Its totient is φ = 7475472.

The previous prime is 11836217. The next prime is 11836271. The reversal of 11836221 is 12263811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11836221 - 2² = 11836217 is a prime.

It is a super-2 number, since 2×11836221² = 280192255121682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11836191 and 11836200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11836211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103770 + ... + 103883.

It is an arithmetic number, because the mean of its divisors is an integer number (2076540).

Almost surely, 2^11836221 is an apocalyptic number.

It is an amenable number.

11836221 is a deficient number, since it is larger than the sum of its proper divisors (4776099).

11836221 is a wasteful number, since it uses less digits than its factorization.

11836221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207675.

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

The square root of 11836221 is about 3440.3809382102. The cubic root of 11836221 is about 227.8965173668.

The spelling of 11836221 in words is "eleven million, eight hundred thirty-six thousand, two hundred twenty-one".