21233130412 has 12 divisors (see below), whose sum is σ = 40016284336. Its totient is φ = 9799906320.

The previous prime is 21233130403. The next prime is 21233130427. The reversal of 21233130412 is 21403133212.

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, 204164664 + ... + 204164767.

Almost surely, 2^21233130412 is an apocalyptic number.

It is an amenable number.

21233130412 is a deficient number, since it is larger than the sum of its proper divisors (18783153924).

21233130412 is a wasteful number, since it uses less digits than its factorization.

21233130412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408329448 (or 408329446 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21233130412 its reverse (21403133212), we get a palindrome (42636263624).

The spelling of 21233130412 in words is "twenty-one billion, two hundred thirty-three million, one hundred thirty thousand, four hundred twelve".