22211243 has 4 divisors (see below), whose sum is σ = 22230768. Its totient is φ = 22191720.

The previous prime is 22211219. The next prime is 22211249. The reversal of 22211243 is 34211222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34211222 = 2 ⋅17105611.

It is a cyclic number.

It is not a de Polignac number, because 22211243 - 2⁶ = 22211179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22211249) 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, 7943 + ... + 10368.

It is an arithmetic number, because the mean of its divisors is an integer number (5557692).

Almost surely, 2^22211243 is an apocalyptic number.

22211243 is a deficient number, since it is larger than the sum of its proper divisors (19525).

22211243 is a wasteful number, since it uses less digits than its factorization.

22211243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19524.

The product of its digits is 192, while the sum is 17.

The square root of 22211243 is about 4712.8805416645. The cubic root of 22211243 is about 281.0979129666.

Adding to 22211243 its reverse (34211222), we get a palindrome (56422465).

The spelling of 22211243 in words is "twenty-two million, two hundred eleven thousand, two hundred forty-three".