21230012332 has 12 divisors (see below), whose sum is σ = 37189204416. Its totient is φ = 10604525360.

The previous prime is 21230012269. The next prime is 21230012333. The reversal of 21230012332 is 23321003212.

It is not an unprimeable number, because it can be changed into a prime (21230012333) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2615644 + ... + 2623747.

It is an arithmetic number, because the mean of its divisors is an integer number (3099100368).

Almost surely, 2^21230012332 is an apocalyptic number.

It is an amenable number.

21230012332 is a deficient number, since it is larger than the sum of its proper divisors (15959192084).

21230012332 is a wasteful number, since it uses less digits than its factorization.

21230012332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5240408 (or 5240406 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21230012332 its reverse (23321003212), we get a palindrome (44551015544).

The spelling of 21230012332 in words is "twenty-one billion, two hundred thirty million, twelve thousand, three hundred thirty-two".