20001320203033 has 8 divisors (see below), whose sum is σ = 21565866278600. Its totient is φ = 18440485982208.

The previous prime is 20001320203019. The next prime is 20001320203091. The reversal of 20001320203033 is 33030202310002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 273307024 + 20001046896009 = 16532^2 + 4472253^2 .

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 20001320203033 - 2²⁵ = 20001286648601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20001320203033.

It is not an unprimeable number, because it can be changed into a prime (20001320203013) 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 7 ways as a sum of consecutive naturals, for example, 927952488 + ... + 927974041.

It is an arithmetic number, because the mean of its divisors is an integer number (2695733284825).

Almost surely, 2^{20001320203033} is an apocalyptic number.

It is an amenable number.

20001320203033 is a deficient number, since it is larger than the sum of its proper divisors (1564546075567).

20001320203033 is a wasteful number, since it uses less digits than its factorization.

20001320203033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855927371.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20001320203033 its reverse (33030202310002), we get a palindrome (53031522513035).

The spelling of 20001320203033 in words is "twenty trillion, one billion, three hundred twenty million, two hundred three thousand, thirty-three".