11220243 has 4 divisors (see below), whose sum is σ = 14960328. Its totient is φ = 7480160.

The previous prime is 11220227. The next prime is 11220247. The reversal of 11220243 is 34202211.

11220243 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34202211 = 3 ⋅11400737.

It is a cyclic number.

It is not a de Polignac number, because 11220243 - 2⁴ = 11220227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11220247) 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, 1870038 + ... + 1870043.

It is an arithmetic number, because the mean of its divisors is an integer number (3740082).

Almost surely, 2^11220243 is an apocalyptic number.

11220243 is a deficient number, since it is larger than the sum of its proper divisors (3740085).

11220243 is an equidigital number, since it uses as much as digits as its factorization.

11220243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740084.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 11220243 is about 3349.6631173896. The cubic root of 11220243 is about 223.8725026462.

Adding to 11220243 its reverse (34202211), we get a palindrome (45422454).

The spelling of 11220243 in words is "eleven million, two hundred twenty thousand, two hundred forty-three".