20213013121303 has 4 divisors (see below), whose sum is σ = 20213022222360. Its totient is φ = 20213004020248.

The previous prime is 20213013121111. The next prime is 20213013121307. The reversal of 20213013121303 is 30312131031202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20213013121303 - 2³³ = 20204423186711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213013121307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220676 + ... + 6474262.

It is an arithmetic number, because the mean of its divisors is an integer number (5053255555590).

Almost surely, 2^{20213013121303} is an apocalyptic number.

20213013121303 is a deficient number, since it is larger than the sum of its proper divisors (9101057).

20213013121303 is an equidigital number, since it uses as much as digits as its factorization.

20213013121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101056.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20213013121303 its reverse (30312131031202), we get a palindrome (50525144152505).

The spelling of 20213013121303 in words is "twenty trillion, two hundred thirteen billion, thirteen million, one hundred twenty-one thousand, three hundred three".