21203321002242 has 16 divisors (see below), whose sum is σ = 42408061547232. Its totient is φ = 7067537076960.

The previous prime is 21203321002219. The next prime is 21203321002249. The reversal of 21203321002242 is 24220012330212.

It is not an unprimeable number, because it can be changed into a prime (21203321002249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58953388 + ... + 59311959.

It is an arithmetic number, because the mean of its divisors is an integer number (2650503846702).

Almost surely, 2^{21203321002242} is an apocalyptic number.

21203321002242 is an abundant number, since it is smaller than the sum of its proper divisors (21204740544990).

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

21203321002242 is a wasteful number, since it uses less digits than its factorization.

21203321002242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118295233.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21203321002242 its reverse (24220012330212), we get a palindrome (45423333332454).

The spelling of 21203321002242 in words is "twenty-one trillion, two hundred three billion, three hundred twenty-one million, two thousand, two hundred forty-two".