21233210242 has 8 divisors (see below), whose sum is σ = 33234590016. Its totient is φ = 10155013572.

The previous prime is 21233210233. The next prime is 21233210263. The reversal of 21233210242 is 24201233212.

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

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, 230795718 + ... + 230795809.

It is an arithmetic number, because the mean of its divisors is an integer number (4154323752).

Almost surely, 2^21233210242 is an apocalyptic number.

21233210242 is a deficient number, since it is larger than the sum of its proper divisors (12001379774).

21233210242 is a wasteful number, since it uses less digits than its factorization.

21233210242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461591552.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21233210242 its reverse (24201233212), we get a palindrome (45434443454).

The spelling of 21233210242 in words is "twenty-one billion, two hundred thirty-three million, two hundred ten thousand, two hundred forty-two".