21004010232 has 64 divisors (see below), whose sum is σ = 52902720000. Its totient is φ = 6949173504.

The previous prime is 21004010201. The next prime is 21004010239. The reversal of 21004010232 is 23201040012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21004010239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1789519 + ... + 1801217.

It is an arithmetic number, because the mean of its divisors is an integer number (826605000).

Almost surely, 2^21004010232 is an apocalyptic number.

It is an amenable number.

21004010232 is an abundant number, since it is smaller than the sum of its proper divisors (31898709768).

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

21004010232 is a wasteful number, since it uses less digits than its factorization.

21004010232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12260 (or 12256 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21004010232 its reverse (23201040012), we get a palindrome (44205050244).

The spelling of 21004010232 in words is "twenty-one billion, four million, ten thousand, two hundred thirty-two".