20201233013 has 4 divisors (see below), whose sum is σ = 21755174028. Its totient is φ = 18647292000.

The previous prime is 20201233007. The next prime is 20201233057. The reversal of 20201233013 is 31033210202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2640212689 + 17561020324 = 51383^2 + 132518^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201233013 - 2¹⁰ = 20201231989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201232982 and 20201233000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201233313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776970488 + ... + 776970513.

It is an arithmetic number, because the mean of its divisors is an integer number (5438793507).

Almost surely, 2^20201233013 is an apocalyptic number.

It is an amenable number.

20201233013 is a deficient number, since it is larger than the sum of its proper divisors (1553941015).

20201233013 is a wasteful number, since it uses less digits than its factorization.

20201233013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553941014.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20201233013 its reverse (31033210202), we get a palindrome (51234443215).

The spelling of 20201233013 in words is "twenty billion, two hundred one million, two hundred thirty-three thousand, thirteen".