22421243 has 8 divisors (see below), whose sum is σ = 24182928. Its totient is φ = 20664864.

The previous prime is 22421233. The next prime is 22421281. The reversal of 22421243 is 34212422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22421243 - 2⁸ = 22420987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22421233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14705 + ... + 16157.

It is an arithmetic number, because the mean of its divisors is an integer number (3022866).

Almost surely, 2^22421243 is an apocalyptic number.

22421243 is a deficient number, since it is larger than the sum of its proper divisors (1761685).

22421243 is a wasteful number, since it uses less digits than its factorization.

22421243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653.

The product of its digits is 768, while the sum is 20.

The square root of 22421243 is about 4735.1074961399. The cubic root of 22421243 is about 281.9810317037.

Adding to 22421243 its reverse (34212422), we get a palindrome (56633665).

The spelling of 22421243 in words is "twenty-two million, four hundred twenty-one thousand, two hundred forty-three".