22421120545 has 16 divisors (see below), whose sum is σ = 27091295568. Its totient is φ = 17813053440.

The previous prime is 22421120539. The next prime is 22421120551. The reversal of 22421120545 is 54502112422.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22421120539) and next prime (22421120551).

It can be written as a sum of positive squares in 8 ways, for example, as 576576144 + 21844544401 = 24012^2 + 147799^2 .

It is not a de Polignac number, because 22421120545 - 2²⁹ = 21884249633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1689777 + ... + 1702993.

It is an arithmetic number, because the mean of its divisors is an integer number (1693205973).

Almost surely, 2^22421120545 is an apocalyptic number.

It is an amenable number.

22421120545 is a deficient number, since it is larger than the sum of its proper divisors (4670175023).

22421120545 is a wasteful number, since it uses less digits than its factorization.

22421120545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15540.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 22421120545 its reverse (54502112422), we get a palindrome (76923232967).

The spelling of 22421120545 in words is "twenty-two billion, four hundred twenty-one million, one hundred twenty thousand, five hundred forty-five".