21000302211313 has 8 divisors (see below), whose sum is σ = 21195433949256. Its totient is φ = 20805333427200.

The previous prime is 21000302211289. The next prime is 21000302211367. The reversal of 21000302211313 is 31311220300012.

It can be written as a sum of positive squares in 4 ways, for example, as 3482000784144 + 17518301427169 = 1866012^2 + 4185487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21000302211313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000342211313) 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, 40479508 + ... + 40995013.

It is an arithmetic number, because the mean of its divisors is an integer number (2649429243657).

Almost surely, 2^{21000302211313} is an apocalyptic number.

It is an amenable number.

21000302211313 is a deficient number, since it is larger than the sum of its proper divisors (195131737943).

21000302211313 is a wasteful number, since it uses less digits than its factorization.

21000302211313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81476915.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21000302211313 its reverse (31311220300012), we get a palindrome (52311522511325).

The spelling of 21000302211313 in words is "twenty-one trillion, three hundred two million, two hundred eleven thousand, three hundred thirteen".