21442344045224 has 8 divisors (see below), whose sum is σ = 40204395084810. Its totient is φ = 10721172022608.

The previous prime is 21442344045203. The next prime is 21442344045277. The reversal of 21442344045224 is 42254044324412.

It can be written as a sum of positive squares in only one way, i.e., 21096108302500 + 346235742724 = 4593050^2 + 588418^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340146502819 + ... + 1340146502834.

Almost surely, 2^{21442344045224} is an apocalyptic number.

It is an amenable number.

21442344045224 is a deficient number, since it is larger than the sum of its proper divisors (18762051039586).

21442344045224 is a wasteful number, since it uses less digits than its factorization.

21442344045224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680293005659 (or 2680293005655 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 41.

Adding to 21442344045224 its reverse (42254044324412), we get a palindrome (63696388369636).

The spelling of 21442344045224 in words is "twenty-one trillion, four hundred forty-two billion, three hundred forty-four million, forty-five thousand, two hundred twenty-four".