21224560122444 has 48 divisors (see below), whose sum is σ = 56600493017600. Its totient is φ = 6063981532416.

The previous prime is 21224560122407. The next prime is 21224560122463. The reversal of 21224560122444 is 44422106542212.

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, 834904 + ... + 6568575.

Almost surely, 2^{21224560122444} is an apocalyptic number.

It is an amenable number.

21224560122444 is an abundant number, since it is smaller than the sum of its proper divisors (35375932895156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21224560122444 is a wasteful number, since it uses less digits than its factorization.

21224560122444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7437622 (or 7437620 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 39.

Adding to 21224560122444 its reverse (44422106542212), we get a palindrome (65646666664656).

The spelling of 21224560122444 in words is "twenty-one trillion, two hundred twenty-four billion, five hundred sixty million, one hundred twenty-two thousand, four hundred forty-four".