212023303117 has 2 divisors, whose sum is σ = 212023303118. Its totient is φ = 212023303116.

The previous prime is 212023303103. The next prime is 212023303147. The reversal of 212023303117 is 711303320212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138183936361 + 73839366756 = 371731^2 + 271734^2 .

It is a cyclic number.

It is not a de Polignac number, because 212023303117 - 2¹¹ = 212023301069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212023303091 and 212023303100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212023303147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011651558 + 106011651559.

It is an arithmetic number, because the mean of its divisors is an integer number (106011651559).

Almost surely, 2^212023303117 is an apocalyptic number.

It is an amenable number.

212023303117 is a deficient number, since it is larger than the sum of its proper divisors (1).

212023303117 is an equidigital number, since it uses as much as digits as its factorization.

212023303117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 212023303117 its reverse (711303320212), we get a palindrome (923326623329).

The spelling of 212023303117 in words is "two hundred twelve billion, twenty-three million, three hundred three thousand, one hundred seventeen".