21202323132311 has 2 divisors, whose sum is σ = 21202323132312. Its totient is φ = 21202323132310.

The previous prime is 21202323132281. The next prime is 21202323132349. The reversal of 21202323132311 is 11323132320212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21202323132311 - 2¹⁴ = 21202323115927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202323132611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601161566155 + 10601161566156.

It is an arithmetic number, because the mean of its divisors is an integer number (10601161566156).

Almost surely, 2^{21202323132311} is an apocalyptic number.

21202323132311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202323132311 is an equidigital number, since it uses as much as digits as its factorization.

21202323132311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21202323132311 its reverse (11323132320212), we get a palindrome (32525455452523).

The spelling of 21202323132311 in words is "twenty-one trillion, two hundred two billion, three hundred twenty-three million, one hundred thirty-two thousand, three hundred eleven".