22232444401 has 4 divisors (see below), whose sum is σ = 22233340404. Its totient is φ = 22231548400.

The previous prime is 22232444389. The next prime is 22232444411. The reversal of 22232444401 is 10444423222.

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 4735504225 + 17496940176 = 68815^2 + 132276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22232444401 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 22232444401.

It is not an unprimeable number, because it can be changed into a prime (22232444411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409690 + ... + 460771.

It is an arithmetic number, because the mean of its divisors is an integer number (5558335101).

Almost surely, 2^22232444401 is an apocalyptic number.

It is an amenable number.

22232444401 is a deficient number, since it is larger than the sum of its proper divisors (896003).

22232444401 is an equidigital number, since it uses as much as digits as its factorization.

22232444401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896002.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 22232444401 its reverse (10444423222), we get a palindrome (32676867623).

The spelling of 22232444401 in words is "twenty-two billion, two hundred thirty-two million, four hundred forty-four thousand, four hundred one".