11450221 has 4 divisors (see below), whose sum is σ = 11476512. Its totient is φ = 11423932.

The previous prime is 11450213. The next prime is 11450267. The reversal of 11450221 is 12205411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12205411 = 1559 ⋅7829.

It is a cyclic number.

It is not a de Polignac number, because 11450221 - 2³ = 11450213 is a prime.

It is a super-2 number, since 2×11450221² = 262215121897682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11450195 and 11450204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11450291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12481 + ... + 13366.

It is an arithmetic number, because the mean of its divisors is an integer number (2869128).

Almost surely, 2^11450221 is an apocalyptic number.

It is an amenable number.

11450221 is a deficient number, since it is larger than the sum of its proper divisors (26291).

11450221 is an equidigital number, since it uses as much as digits as its factorization.

11450221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26290.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 11450221 is about 3383.8175187205. The cubic root of 11450221 is about 225.3917192770.

Adding to 11450221 its reverse (12205411), we get a palindrome (23655632).

The spelling of 11450221 in words is "eleven million, four hundred fifty thousand, two hundred twenty-one".