21042000332 has 6 divisors (see below), whose sum is σ = 36823500588. Its totient is φ = 10521000164.

The previous prime is 21042000313. The next prime is 21042000349. The reversal of 21042000332 is 23300024012.

It is a super-2 number, since 2×21042000332² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21042000332.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630250038 + ... + 2630250045.

It is an arithmetic number, because the mean of its divisors is an integer number (6137250098).

Almost surely, 2^21042000332 is an apocalyptic number.

It is an amenable number.

21042000332 is a deficient number, since it is larger than the sum of its proper divisors (15781500256).

21042000332 is a wasteful number, since it uses less digits than its factorization.

21042000332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260500087 (or 5260500085 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21042000332 its reverse (23300024012), we get a palindrome (44342024344).

The spelling of 21042000332 in words is "twenty-one billion, forty-two million, three hundred thirty-two", and thus it is an aban number.