21302112232 has 8 divisors (see below), whose sum is σ = 39941460450. Its totient is φ = 10651056112.

The previous prime is 21302112217. The next prime is 21302112263. The reversal of 21302112232 is 23221120312.

It can be written as a sum of positive squares in only one way, i.e., 20310240196 + 991872036 = 142514^2 + 31494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331382007 + ... + 1331382022.

Almost surely, 2^21302112232 is an apocalyptic number.

It is an amenable number.

21302112232 is a deficient number, since it is larger than the sum of its proper divisors (18639348218).

21302112232 is a wasteful number, since it uses less digits than its factorization.

21302112232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662764035 (or 2662764031 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21302112232 its reverse (23221120312), we get a palindrome (44523232544).

The spelling of 21302112232 in words is "twenty-one billion, three hundred two million, one hundred twelve thousand, two hundred thirty-two".