21467221522232 has 64 divisors (see below), whose sum is σ = 43878654720000. Its totient is φ = 9807260561280.

The previous prime is 21467221522207. The next prime is 21467221522297. The reversal of 21467221522232 is 23222512276412.

It is a self number, because there is not a number n which added to its sum of digits gives 21467221522232.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1342769 + ... + 6688607.

It is an arithmetic number, because the mean of its divisors is an integer number (685603980000).

Almost surely, 2^{21467221522232} is an apocalyptic number.

It is an amenable number.

21467221522232 is an abundant number, since it is smaller than the sum of its proper divisors (22411433197768).

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

21467221522232 is a wasteful number, since it uses less digits than its factorization.

21467221522232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5346804 (or 5346800 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

Adding to 21467221522232 its reverse (23222512276412), we get a palindrome (44689733798644).

The spelling of 21467221522232 in words is "twenty-one trillion, four hundred sixty-seven billion, two hundred twenty-one million, five hundred twenty-two thousand, two hundred thirty-two".