21320012133202 has 4 divisors (see below), whose sum is σ = 31980018199806. Its totient is φ = 10660006066600.

The previous prime is 21320012133169. The next prime is 21320012133221. The reversal of 21320012133202 is 20233121002312.

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., 14583760439161 + 6736251694041 = 3818869^2 + 2595429^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330003033299 + ... + 5330003033302.

Almost surely, 2^{21320012133202} is an apocalyptic number.

21320012133202 is a deficient number, since it is larger than the sum of its proper divisors (10660006066604).

21320012133202 is a wasteful number, since it uses less digits than its factorization.

21320012133202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10660006066603.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21320012133202 its reverse (20233121002312), we get a palindrome (41553133135514).

The spelling of 21320012133202 in words is "twenty-one trillion, three hundred twenty billion, twelve million, one hundred thirty-three thousand, two hundred two".