22013243 has 4 divisors (see below), whose sum is σ = 25158000. Its totient is φ = 18868488.

The previous prime is 22013239. The next prime is 22013273. The reversal of 22013243 is 34231022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22013243 - 2² = 22013239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22013203) 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, 1572368 + ... + 1572381.

It is an arithmetic number, because the mean of its divisors is an integer number (6289500).

Almost surely, 2^22013243 is an apocalyptic number.

22013243 is a deficient number, since it is larger than the sum of its proper divisors (3144757).

22013243 is an equidigital number, since it uses as much as digits as its factorization.

22013243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144756.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22013243 is about 4691.8272559846. The cubic root of 22013243 is about 280.2601451317.

Adding to 22013243 its reverse (34231022), we get a palindrome (56244265).

The spelling of 22013243 in words is "twenty-two million, thirteen thousand, two hundred forty-three".