212303100213 has 6 divisors (see below), whose sum is σ = 306660033654. Its totient is φ = 141535400136.

The previous prime is 212303100173. The next prime is 212303100227. The reversal of 212303100213 is 312001303212.

It can be written as a sum of positive squares in only one way, i.e., 133486468164 + 78816632049 = 365358^2 + 280743^2 .

It is not a de Polignac number, because 212303100213 - 2¹³ = 212303092021 is a prime.

It is a super-2 number, since 2×212303100213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303100313) 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 in 5 ways as a sum of consecutive naturals, for example, 11794616670 + ... + 11794616687.

It is an arithmetic number, because the mean of its divisors is an integer number (51110005609).

Almost surely, 2^212303100213 is an apocalyptic number.

It is an amenable number.

212303100213 is a deficient number, since it is larger than the sum of its proper divisors (94356933441).

212303100213 is a wasteful number, since it uses less digits than its factorization.

212303100213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23589233363 (or 23589233360 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 212303100213 its reverse (312001303212), we get a palindrome (524304403425).

The spelling of 212303100213 in words is "two hundred twelve billion, three hundred three million, one hundred thousand, two hundred thirteen".