21003313332 has 48 divisors (see below), whose sum is σ = 50268310400. Its totient is φ = 6823128960.

The previous prime is 21003313319. The next prime is 21003313361. The reversal of 21003313332 is 23331330012.

It is a super-2 number, since 2×21003313332² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003313299 and 21003313308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51832 + ... + 211407.

Almost surely, 2^21003313332 is an apocalyptic number.

It is an amenable number.

21003313332 is an abundant number, since it is smaller than the sum of its proper divisors (29264997068).

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

21003313332 is a wasteful number, since it uses less digits than its factorization.

21003313332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263416 (or 263414 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21003313332 its reverse (23331330012), we get a palindrome (44334643344).

The spelling of 21003313332 in words is "twenty-one billion, three million, three hundred thirteen thousand, three hundred thirty-two".