202130023321 has 2 divisors, whose sum is σ = 202130023322. Its totient is φ = 202130023320.

The previous prime is 202130023169. The next prime is 202130023357. The reversal of 202130023321 is 123320031202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177915240000 + 24214783321 = 421800^2 + 155611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202130023321 is a prime.

It is not a weakly prime, because it can be changed into another prime (202130023391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101065011660 + 101065011661.

It is an arithmetic number, because the mean of its divisors is an integer number (101065011661).

Almost surely, 2^202130023321 is an apocalyptic number.

It is an amenable number.

202130023321 is a deficient number, since it is larger than the sum of its proper divisors (1).

202130023321 is an equidigital number, since it uses as much as digits as its factorization.

202130023321 is an evil number, because the sum of its binary digits is even.

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

Adding to 202130023321 its reverse (123320031202), we get a palindrome (325450054523).

The spelling of 202130023321 in words is "two hundred two billion, one hundred thirty million, twenty-three thousand, three hundred twenty-one".