22521303450012 has 24 divisors (see below), whose sum is σ = 52599803130000. Its totient is φ = 7499944710016.

The previous prime is 22521303450001. The next prime is 22521303450077. The reversal of 22521303450012 is 21005430312522.

It is a congruent number.

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, 894541887 + ... + 894567062.

It is an arithmetic number, because the mean of its divisors is an integer number (2191658463750).

Almost surely, 2^{22521303450012} is an apocalyptic number.

It is an amenable number.

22521303450012 is an abundant number, since it is smaller than the sum of its proper divisors (30078499679988).

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

22521303450012 is a wasteful number, since it uses less digits than its factorization.

22521303450012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789110005 (or 1789110003 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 22521303450012 its reverse (21005430312522), we get a palindrome (43526733762534).

The spelling of 22521303450012 in words is "twenty-two trillion, five hundred twenty-one billion, three hundred three million, four hundred fifty thousand, twelve".