213102232169 has 2 divisors, whose sum is σ = 213102232170. Its totient is φ = 213102232168.

The previous prime is 213102232153. The next prime is 213102232171. The reversal of 213102232169 is 961232201312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144999500944 + 68102731225 = 380788^2 + 260965^2 .

It is a cyclic number.

It is not a de Polignac number, because 213102232169 - 2⁴ = 213102232153 is a prime.

It is a super-2 number, since 2×213102232169² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 213102232171, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (213102232139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106551116084 + 106551116085.

It is an arithmetic number, because the mean of its divisors is an integer number (106551116085).

Almost surely, 2^213102232169 is an apocalyptic number.

It is an amenable number.

213102232169 is a deficient number, since it is larger than the sum of its proper divisors (1).

213102232169 is an equidigital number, since it uses as much as digits as its factorization.

213102232169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 213102232169 in words is "two hundred thirteen billion, one hundred two million, two hundred thirty-two thousand, one hundred sixty-nine".