212004251 has 2 divisors, whose sum is σ = 212004252. Its totient is φ = 212004250.

The previous prime is 212004227. The next prime is 212004253. The reversal of 212004251 is 152400212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212004251 is a prime.

Together with 212004253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212004253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106002125 + 106002126.

It is an arithmetic number, because the mean of its divisors is an integer number (106002126).

Almost surely, 2^212004251 is an apocalyptic number.

212004251 is a deficient number, since it is larger than the sum of its proper divisors (1).

212004251 is an equidigital number, since it uses as much as digits as its factorization.

212004251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 212004251 is about 14560.3657577686. The cubic root of 212004251 is about 596.2771812153.

Adding to 212004251 its reverse (152400212), we get a palindrome (364404463).

The spelling of 212004251 in words is "two hundred twelve million, four thousand, two hundred fifty-one".