21020201300033 has 4 divisors (see below), whose sum is σ = 22637139861588. Its totient is φ = 19403262738480.

The previous prime is 21020201299943. The next prime is 21020201300159. The reversal of 21020201300033 is 33000310202012.

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 4049822181889 + 16970379118144 = 2012417^2 + 4119512^2 .

It is a cyclic number.

It is not a de Polignac number, because 21020201300033 - 2¹⁸ = 21020201037889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21020201299984 and 21020201300020.

It is not an unprimeable number, because it can be changed into a prime (21020201300933) 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, 808469280758 + ... + 808469280783.

It is an arithmetic number, because the mean of its divisors is an integer number (5659284965397).

Almost surely, 2^{21020201300033} is an apocalyptic number.

It is an amenable number.

21020201300033 is a deficient number, since it is larger than the sum of its proper divisors (1616938561555).

21020201300033 is a wasteful number, since it uses less digits than its factorization.

21020201300033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616938561554.

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

Adding to 21020201300033 its reverse (33000310202012), we get a palindrome (54020511502045).

The spelling of 21020201300033 in words is "twenty-one trillion, twenty billion, two hundred one million, three hundred thousand, thirty-three".