21230302232 has 32 divisors (see below), whose sum is σ = 41953950000. Its totient is φ = 10043970048.

The previous prime is 21230302231. The next prime is 21230302243. The reversal of 21230302232 is 23220303212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230302231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36644 + ... + 209292.

Almost surely, 2^21230302232 is an apocalyptic number.

It is an amenable number.

21230302232 is a deficient number, since it is larger than the sum of its proper divisors (20723647768).

21230302232 is a wasteful number, since it uses less digits than its factorization.

21230302232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173483 (or 173479 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21230302232 its reverse (23220303212), we get a palindrome (44450605444).

The spelling of 21230302232 in words is "twenty-one billion, two hundred thirty million, three hundred two thousand, two hundred thirty-two".