21003230332 has 36 divisors (see below), whose sum is σ = 42590076816. Its totient is φ = 8878014720.

The previous prime is 21003230291. The next prime is 21003230341. The reversal of 21003230332 is 23303230012.

It is a happy number.

It is a super-2 number, since 2×21003230332² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78832 + ... + 219592.

Almost surely, 2^21003230332 is an apocalyptic number.

It is an amenable number.

21003230332 is an abundant number, since it is smaller than the sum of its proper divisors (21586846484).

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

21003230332 is a wasteful number, since it uses less digits than its factorization.

21003230332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140918 (or 140843 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21003230332 its reverse (23303230012), we get a palindrome (44306460344).

The spelling of 21003230332 in words is "twenty-one billion, three million, two hundred thirty thousand, three hundred thirty-two".