211321133 has 2 divisors, whose sum is σ = 211321134. Its totient is φ = 211321132.

The previous prime is 211321127. The next prime is 211321139. The reversal of 211321133 is 331123112.

It is a balanced prime because it is at equal distance from previous prime (211321127) and next prime (211321139).

It can be written as a sum of positive squares in only one way, i.e., 153834409 + 57486724 = 12403^2 + 7582^2 .

It is a cyclic number.

It is not a de Polignac number, because 211321133 - 2⁶ = 211321069 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211321139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105660566 + 105660567.

It is an arithmetic number, because the mean of its divisors is an integer number (105660567).

Almost surely, 2^211321133 is an apocalyptic number.

It is an amenable number.

211321133 is a deficient number, since it is larger than the sum of its proper divisors (1).

211321133 is an equidigital number, since it uses as much as digits as its factorization.

211321133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 211321133 is about 14536.8886973795. Note that the first 3 decimals coincide. The cubic root of 211321133 is about 595.6360526308.

Adding to 211321133 its reverse (331123112), we get a palindrome (542444245).

The spelling of 211321133 in words is "two hundred eleven million, three hundred twenty-one thousand, one hundred thirty-three".