22240444445 has 4 divisors (see below), whose sum is σ = 26688533340. Its totient is φ = 17792355552.

The previous prime is 22240444423. The next prime is 22240444517. The reversal of 22240444445 is 54444404222.

It is a happy number.

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 10771533796 + 11468910649 = 103786^2 + 107093^2 .

It is a cyclic number.

It is not a de Polignac number, because 22240444445 - 2⁸ = 22240444189 is a prime.

It is a super-2 number, since 2×22240444445² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224044440 + ... + 2224044449.

It is an arithmetic number, because the mean of its divisors is an integer number (6672133335).

Almost surely, 2^22240444445 is an apocalyptic number.

It is an amenable number.

22240444445 is a deficient number, since it is larger than the sum of its proper divisors (4448088895).

22240444445 is an equidigital number, since it uses as much as digits as its factorization.

22240444445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448088894.

The product of its (nonzero) digits is 163840, while the sum is 35.

Adding to 22240444445 its reverse (54444404222), we get a palindrome (76684848667).

The spelling of 22240444445 in words is "twenty-two billion, two hundred forty million, four hundred forty-four thousand, four hundred forty-five".