21032420240332 has 24 divisors (see below), whose sum is σ = 36828382752000. Its totient is φ = 10510026857616.

The previous prime is 21032420240267. The next prime is 21032420240341. The reversal of 21032420240332 is 23304202423012.

It is a self number, because there is not a number n which added to its sum of digits gives 21032420240332.

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, 50485419 + ... + 50900317.

It is an arithmetic number, because the mean of its divisors is an integer number (1534515948000).

Almost surely, 2^{21032420240332} is an apocalyptic number.

It is an amenable number.

21032420240332 is a deficient number, since it is larger than the sum of its proper divisors (15795962511668).

21032420240332 is a wasteful number, since it uses less digits than its factorization.

21032420240332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422325 (or 422323 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 21032420240332 its reverse (23304202423012), we get a palindrome (44336622663344).

The spelling of 21032420240332 in words is "twenty-one trillion, thirty-two billion, four hundred twenty million, two hundred forty thousand, three hundred thirty-two".