21001202220313 has 16 divisors (see below), whose sum is σ = 25423813094400. Its totient is φ = 16935083928576.

The previous prime is 21001202220289. The next prime is 21001202220389. The reversal of 21001202220313 is 31302220210012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21001202220313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21001202220613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36496656 + ... + 37067617.

It is an arithmetic number, because the mean of its divisors is an integer number (1588988318400).

Almost surely, 2^{21001202220313} is an apocalyptic number.

It is an amenable number.

21001202220313 is a deficient number, since it is larger than the sum of its proper divisors (4422610874087).

21001202220313 is a wasteful number, since it uses less digits than its factorization.

21001202220313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73566696.

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

Adding to 21001202220313 its reverse (31302220210012), we get a palindrome (52303422430325).

The spelling of 21001202220313 in words is "twenty-one trillion, one billion, two hundred two million, two hundred twenty thousand, three hundred thirteen".