21202243024232 has 32 divisors (see below), whose sum is σ = 40190183272800. Its totient is φ = 10485206322624.

The previous prime is 21202243024223. The next prime is 21202243024247. The reversal of 21202243024232 is 23242034220212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21202243024195 and 21202243024204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21102758 + ... + 22084629.

It is an arithmetic number, because the mean of its divisors is an integer number (1255943227275).

Almost surely, 2^{21202243024232} is an apocalyptic number.

It is an amenable number.

21202243024232 is a deficient number, since it is larger than the sum of its proper divisors (18987940248568).

21202243024232 is a wasteful number, since it uses less digits than its factorization.

21202243024232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43188065 (or 43188061 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 21202243024232 its reverse (23242034220212), we get a palindrome (44444277244444).

The spelling of 21202243024232 in words is "twenty-one trillion, two hundred two billion, two hundred forty-three million, twenty-four thousand, two hundred thirty-two".