20132233021 has 2 divisors, whose sum is σ = 20132233022. Its totient is φ = 20132233020.

The previous prime is 20132233013. The next prime is 20132233039. The reversal of 20132233021 is 12033223102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18656828100 + 1475404921 = 136590^2 + 38411^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132233021 - 2³ = 20132233013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20132233021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132233061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066116510 + 10066116511.

It is an arithmetic number, because the mean of its divisors is an integer number (10066116511).

Almost surely, 2^20132233021 is an apocalyptic number.

It is an amenable number.

20132233021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132233021 is an equidigital number, since it uses as much as digits as its factorization.

20132233021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20132233021 its reverse (12033223102), we get a palindrome (32165456123).

The spelling of 20132233021 in words is "twenty billion, one hundred thirty-two million, two hundred thirty-three thousand, twenty-one".