21133333232 has 40 divisors (see below), whose sum is σ = 45757665072. Its totient is φ = 9371763200.

The previous prime is 21133333201. The next prime is 21133333303. The reversal of 21133333232 is 23233333112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 1457123 + ... + 1471554.

Almost surely, 2^21133333232 is an apocalyptic number.

21133333232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21133333232 is an abundant number, since it is smaller than the sum of its proper divisors (24624331840).

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

21133333232 is a wasteful number, since it uses less digits than its factorization.

21133333232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928737 (or 2928731 counting only the distinct ones).

The product of its digits is 5832, while the sum is 26.

Adding to 21133333232 its reverse (23233333112), we get a palindrome (44366666344).

The spelling of 21133333232 in words is "twenty-one billion, one hundred thirty-three million, three hundred thirty-three thousand, two hundred thirty-two".