212310530251 has 2 divisors, whose sum is σ = 212310530252. Its totient is φ = 212310530250.

The previous prime is 212310530207. The next prime is 212310530279. The reversal of 212310530251 is 152035013212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212310530251 is a prime.

It is a super-3 number, since 3×212310530251³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (212310530281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106155265125 + 106155265126.

It is an arithmetic number, because the mean of its divisors is an integer number (106155265126).

Almost surely, 2^212310530251 is an apocalyptic number.

212310530251 is a deficient number, since it is larger than the sum of its proper divisors (1).

212310530251 is an equidigital number, since it uses as much as digits as its factorization.

212310530251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 212310530251 its reverse (152035013212), we get a palindrome (364345543463).

The spelling of 212310530251 in words is "two hundred twelve billion, three hundred ten million, five hundred thirty thousand, two hundred fifty-one".