20021243441213 has 8 divisors (see below), whose sum is σ = 22884101408832. Its totient is φ = 17159055556896.

The previous prime is 20021243441203. The next prime is 20021243441249. The reversal of 20021243441213 is 31214434212002.

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

It is a cyclic number.

It is not a de Polignac number, because 20021243441213 - 2¹⁰ = 20021243440189 is a prime.

It is a super-2 number, since 2×20021243441213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021243441203) 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, 167456795 + ... + 167576312.

It is an arithmetic number, because the mean of its divisors is an integer number (2860512676104).

Almost surely, 2^{20021243441213} is an apocalyptic number.

It is an amenable number.

20021243441213 is a deficient number, since it is larger than the sum of its proper divisors (2862857967619).

20021243441213 is an equidigital number, since it uses as much as digits as its factorization.

20021243441213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335041651.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 20021243441213 its reverse (31214434212002), we get a palindrome (51235677653215).

The spelling of 20021243441213 in words is "twenty trillion, twenty-one billion, two hundred forty-three million, four hundred forty-one thousand, two hundred thirteen".