212103233 has 2 divisors, whose sum is σ = 212103234. Its totient is φ = 212103232.

The previous prime is 212103223. The next prime is 212103239. The reversal of 212103233 is 332301212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108409744 + 103693489 = 10412^2 + 10183^2 .

It is a cyclic number.

It is not a de Polignac number, because 212103233 - 2¹² = 212099137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (212103239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051616 + 106051617.

It is an arithmetic number, because the mean of its divisors is an integer number (106051617).

Almost surely, 2^212103233 is an apocalyptic number.

It is an amenable number.

212103233 is a deficient number, since it is larger than the sum of its proper divisors (1).

212103233 is an equidigital number, since it uses as much as digits as its factorization.

212103233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 212103233 is about 14563.7643828785. The cubic root of 212103233 is about 596.3699647715.

Adding to 212103233 its reverse (332301212), we get a palindrome (544404445).

The spelling of 212103233 in words is "two hundred twelve million, one hundred three thousand, two hundred thirty-three".