21421323332 has 12 divisors (see below), whose sum is σ = 39117199296. Its totient is φ = 10244980680.

The previous prime is 21421323317. The next prime is 21421323347. The reversal of 21421323332 is 23332312412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21421323317) and next prime (21421323347).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116420144 + ... + 116420327.

It is an arithmetic number, because the mean of its divisors is an integer number (3259766608).

Almost surely, 2^21421323332 is an apocalyptic number.

It is an amenable number.

21421323332 is a deficient number, since it is larger than the sum of its proper divisors (17695875964).

21421323332 is a wasteful number, since it uses less digits than its factorization.

21421323332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232840498 (or 232840496 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

Adding to 21421323332 its reverse (23332312412), we get a palindrome (44753635744).

The spelling of 21421323332 in words is "twenty-one billion, four hundred twenty-one million, three hundred twenty-three thousand, three hundred thirty-two".