20211020033 has 2 divisors, whose sum is σ = 20211020034. Its totient is φ = 20211020032.

The previous prime is 20211020021. The next prime is 20211020047. The reversal of 20211020033 is 33002011202.

It is a happy number.

It is an a-pointer prime, because the next prime (20211020047) can be obtained adding 20211020033 to its sum of digits (14).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14118905329 + 6092114704 = 118823^2 + 78052^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211020033 - 2¹⁴ = 20211003649 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211020633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105510016 + 10105510017.

It is an arithmetic number, because the mean of its divisors is an integer number (10105510017).

Almost surely, 2^20211020033 is an apocalyptic number.

It is an amenable number.

20211020033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211020033 is an equidigital number, since it uses as much as digits as its factorization.

20211020033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20211020033 its reverse (33002011202), we get a palindrome (53213031235).

The spelling of 20211020033 in words is "twenty billion, two hundred eleven million, twenty thousand, thirty-three".