21301332202 has 4 divisors (see below), whose sum is σ = 31951998306. Its totient is φ = 10650666100.

The previous prime is 21301332161. The next prime is 21301332203. The reversal of 21301332202 is 20223310312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12841195761 + 8460136441 = 113319^2 + 91979^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21301332202.

It is not an unprimeable number, because it can be changed into a prime (21301332203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5325333049 + ... + 5325333052.

Almost surely, 2^21301332202 is an apocalyptic number.

21301332202 is a deficient number, since it is larger than the sum of its proper divisors (10650666104).

21301332202 is a wasteful number, since it uses less digits than its factorization.

21301332202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650666103.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21301332202 its reverse (20223310312), we get a palindrome (41524642514).

The spelling of 21301332202 in words is "twenty-one billion, three hundred one million, three hundred thirty-two thousand, two hundred two".