21500032414242 has 8 divisors (see below), whose sum is σ = 43000064828496. Its totient is φ = 7166677471412.

The previous prime is 21500032414177. The next prime is 21500032414279. The reversal of 21500032414242 is 24241423000512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

21500032414242 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1791669367848 + ... + 1791669367859.

It is an arithmetic number, because the mean of its divisors is an integer number (5375008103562).

Almost surely, 2^{21500032414242} is an apocalyptic number.

21500032414242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21500032414242 is a wasteful number, since it uses less digits than its factorization.

21500032414242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583338735712.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 21500032414242 its reverse (24241423000512), we get a palindrome (45741455414754).

The spelling of 21500032414242 in words is "twenty-one trillion, five hundred billion, thirty-two million, four hundred fourteen thousand, two hundred forty-two".