21302441332 has 6 divisors (see below), whose sum is σ = 37279272338. Its totient is φ = 10651220664.

The previous prime is 21302441291. The next prime is 21302441339. The reversal of 21302441332 is 23314420312.

It can be written as a sum of positive squares in only one way, i.e., 19288765456 + 2013675876 = 138884^2 + 44874^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21302441297 and 21302441306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302441339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2662805163 + ... + 2662805170.

Almost surely, 2^21302441332 is an apocalyptic number.

It is an amenable number.

21302441332 is a deficient number, since it is larger than the sum of its proper divisors (15976831006).

21302441332 is a wasteful number, since it uses less digits than its factorization.

21302441332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325610337 (or 5325610335 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21302441332 its reverse (23314420312), we get a palindrome (44616861644).

The spelling of 21302441332 in words is "twenty-one billion, three hundred two million, four hundred forty-one thousand, three hundred thirty-two".