22421445423445 has 16 divisors (see below), whose sum is σ = 27432573957360. Its totient is φ = 17586403720704.

The previous prime is 22421445423437. The next prime is 22421445423449. The reversal of 22421445423445 is 54432454412422.

It can be written as a sum of positive squares in 8 ways, for example, as 1194775791364 + 21226669632081 = 1093058^2 + 4607241^2 .

It is a cyclic number.

It is not a de Polignac number, because 22421445423445 - 2³ = 22421445423437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22421445423395 and 22421445423404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22421445423449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29225664 + ... + 29983033.

It is an arithmetic number, because the mean of its divisors is an integer number (1714535872335).

Almost surely, 2^{22421445423445} is an apocalyptic number.

It is an amenable number.

22421445423445 is a deficient number, since it is larger than the sum of its proper divisors (5011128533915).

22421445423445 is a wasteful number, since it uses less digits than its factorization.

22421445423445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59210184.

The product of its digits is 4915200, while the sum is 46.

Adding to 22421445423445 its reverse (54432454412422), we get a palindrome (76853899835867).

The spelling of 22421445423445 in words is "twenty-two trillion, four hundred twenty-one billion, four hundred forty-five million, four hundred twenty-three thousand, four hundred forty-five".