22424343121 has 4 divisors (see below), whose sum is σ = 22424966500. Its totient is φ = 22423719744.

The previous prime is 22424343113. The next prime is 22424343131. The reversal of 22424343121 is 12134342422.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5309162496 + 17115180625 = 72864^2 + 130825^2 .

It is a cyclic number.

It is not a de Polignac number, because 22424343121 - 2³ = 22424343113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22424343121.

It is not an unprimeable number, because it can be changed into a prime (22424343131) 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, 254196 + ... + 330853.

It is an arithmetic number, because the mean of its divisors is an integer number (5606241625).

Almost surely, 2^22424343121 is an apocalyptic number.

It is an amenable number.

22424343121 is a deficient number, since it is larger than the sum of its proper divisors (623379).

22424343121 is an equidigital number, since it uses as much as digits as its factorization.

22424343121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623378.

The product of its digits is 9216, while the sum is 28.

Adding to 22424343121 its reverse (12134342422), we get a palindrome (34558685543).

The spelling of 22424343121 in words is "twenty-two billion, four hundred twenty-four million, three hundred forty-three thousand, one hundred twenty-one".