21220036063324 has 18 divisors (see below), whose sum is σ = 43197930557880. Its totient is φ = 9094301169912.

The previous prime is 21220036063319. The next prime is 21220036063333. The reversal of 21220036063324 is 42336063002212.

It is a super-2 number, since 2×21220036063324² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21220036063324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54132744864 + ... + 54132745255.

Almost surely, 2^{21220036063324} is an apocalyptic number.

It is an amenable number.

21220036063324 is an abundant number, since it is smaller than the sum of its proper divisors (21977894494556).

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

21220036063324 is a wasteful number, since it uses less digits than its factorization.

21220036063324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108265490137 (or 108265490128 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

Adding to 21220036063324 its reverse (42336063002212), we get a palindrome (63556099065536).

The spelling of 21220036063324 in words is "twenty-one trillion, two hundred twenty billion, thirty-six million, sixty-three thousand, three hundred twenty-four".