21243332322242 has 64 divisors (see below), whose sum is σ = 33162448896000. Its totient is φ = 10200264826752.

The previous prime is 21243332322137. The next prime is 21243332322269. The reversal of 21243332322242 is 24222323334212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3734103734 + ... + 3734109422.

It is an arithmetic number, because the mean of its divisors is an integer number (518163264000).

Almost surely, 2^{21243332322242} is an apocalyptic number.

21243332322242 is a deficient number, since it is larger than the sum of its proper divisors (11919116573758).

21243332322242 is a wasteful number, since it uses less digits than its factorization.

21243332322242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9663.

The product of its digits is 165888, while the sum is 35.

Adding to 21243332322242 its reverse (24222323334212), we get a palindrome (45465655656454).

The spelling of 21243332322242 in words is "twenty-one trillion, two hundred forty-three billion, three hundred thirty-two million, three hundred twenty-two thousand, two hundred forty-two".