211742033 has 2 divisors, whose sum is σ = 211742034. Its totient is φ = 211742032.

The previous prime is 211741993. The next prime is 211742057. The reversal of 211742033 is 330247112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210018064 + 1723969 = 14492^2 + 1313^2 .

It is a cyclic number.

It is not a de Polignac number, because 211742033 - 2¹² = 211737937 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 (211742233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105871016 + 105871017.

It is an arithmetic number, because the mean of its divisors is an integer number (105871017).

Almost surely, 2^211742033 is an apocalyptic number.

It is an amenable number.

211742033 is a deficient number, since it is larger than the sum of its proper divisors (1).

211742033 is an equidigital number, since it uses as much as digits as its factorization.

211742033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 211742033 is about 14551.3584589206. The cubic root of 211742033 is about 596.0312441393.

Adding to 211742033 its reverse (330247112), we get a palindrome (541989145).

The spelling of 211742033 in words is "two hundred eleven million, seven hundred forty-two thousand, thirty-three".