21522324120044 has 24 divisors (see below), whose sum is σ = 41200029954048. Its totient is φ = 9756218258640.

The previous prime is 21522324120029. The next prime is 21522324120163. The reversal of 21522324120044 is 44002142322512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666392204 + ... + 666424499.

It is an arithmetic number, because the mean of its divisors is an integer number (1716667914752).

Almost surely, 2^{21522324120044} is an apocalyptic number.

It is an amenable number.

21522324120044 is a deficient number, since it is larger than the sum of its proper divisors (19677705834004).

21522324120044 is a wasteful number, since it uses less digits than its factorization.

21522324120044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332817085 (or 1332817083 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 21522324120044 its reverse (44002142322512), we get a palindrome (65524466442556).

The spelling of 21522324120044 in words is "twenty-one trillion, five hundred twenty-two billion, three hundred twenty-four million, one hundred twenty thousand, forty-four".