20211313202021 has 8 divisors (see below), whose sum is σ = 20347215626400. Its totient is φ = 20075414191632.

The previous prime is 20211313202011. The next prime is 20211313202039. The reversal of 20211313202021 is 12020231311202.

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-20211313202021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211313201984 and 20211313202002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211313202011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11639246 + ... + 13262528.

It is an arithmetic number, because the mean of its divisors is an integer number (2543401953300).

Almost surely, 2^{20211313202021} is an apocalyptic number.

It is an amenable number.

20211313202021 is a deficient number, since it is larger than the sum of its proper divisors (135902424379).

20211313202021 is a wasteful number, since it uses less digits than its factorization.

20211313202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706995.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20211313202021 its reverse (12020231311202), we get a palindrome (32231544513223).

The spelling of 20211313202021 in words is "twenty trillion, two hundred eleven billion, three hundred thirteen million, two hundred two thousand, twenty-one".