212030257 has 2 divisors, whose sum is σ = 212030258. Its totient is φ = 212030256.

The previous prime is 212030201. The next prime is 212030267. The reversal of 212030257 is 752030212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210946576 + 1083681 = 14524^2 + 1041^2 .

It is a cyclic number.

It is not a de Polignac number, because 212030257 - 2¹¹ = 212028209 is a prime.

It is not a weakly prime, because it can be changed into another prime (212030267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106015128 + 106015129.

It is an arithmetic number, because the mean of its divisors is an integer number (106015129).

Almost surely, 2^212030257 is an apocalyptic number.

It is an amenable number.

212030257 is a deficient number, since it is larger than the sum of its proper divisors (1).

212030257 is an equidigital number, since it uses as much as digits as its factorization.

212030257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 212030257 is about 14561.2587711365. The cubic root of 212030257 is about 596.3015614660.

Adding to 212030257 its reverse (752030212), we get a palindrome (964060469).

The spelling of 212030257 in words is "two hundred twelve million, thirty thousand, two hundred fifty-seven".