11221943 has 4 divisors (see below), whose sum is σ = 11229048. Its totient is φ = 11214840.

The previous prime is 11221939. The next prime is 11221949. The reversal of 11221943 is 34912211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11221943 - 2² = 11221939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221949) 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, 5 + ... + 4737.

It is an arithmetic number, because the mean of its divisors is an integer number (2807262).

Almost surely, 2^11221943 is an apocalyptic number.

11221943 is a deficient number, since it is larger than the sum of its proper divisors (7105).

11221943 is an equidigital number, since it uses as much as digits as its factorization.

11221943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7104.

The product of its digits is 432, while the sum is 23.

The square root of 11221943 is about 3349.9168646401. The cubic root of 11221943 is about 223.8838085224.

The spelling of 11221943 in words is "eleven million, two hundred twenty-one thousand, nine hundred forty-three".