21202323133193 has 2 divisors, whose sum is σ = 21202323133194. Its totient is φ = 21202323133192.

The previous prime is 21202323133141. The next prime is 21202323133217. The reversal of 21202323133193 is 39133132320212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18162572727049 + 3039750406144 = 4261757^2 + 1743488^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202323133193 - 2²⁰ = 21202322084617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (21202323133493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601161566596 + 10601161566597.

It is an arithmetic number, because the mean of its divisors is an integer number (10601161566597).

Almost surely, 2^{21202323133193} is an apocalyptic number.

It is an amenable number.

21202323133193 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202323133193 is an equidigital number, since it uses as much as digits as its factorization.

21202323133193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 35.

The spelling of 21202323133193 in words is "twenty-one trillion, two hundred two billion, three hundred twenty-three million, one hundred thirty-three thousand, one hundred ninety-three".