211143133 has 2 divisors, whose sum is σ = 211143134. Its totient is φ = 211143132.

The previous prime is 211143131. The next prime is 211143169. The reversal of 211143133 is 331341112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201270969 + 9872164 = 14187^2 + 3142^2 .

It is a cyclic number.

It is not a de Polignac number, because 211143133 - 2¹ = 211143131 is a prime.

It is a super-2 number, since 2×211143133² = 89162845226111378, which contains 22 as substring.

Together with 211143131, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 211143133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211143131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105571566 + 105571567.

It is an arithmetic number, because the mean of its divisors is an integer number (105571567).

Almost surely, 2^211143133 is an apocalyptic number.

It is an amenable number.

211143133 is a deficient number, since it is larger than the sum of its proper divisors (1).

211143133 is an equidigital number, since it uses as much as digits as its factorization.

211143133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 19.

The square root of 211143133 is about 14530.7650521230. The cubic root of 211143133 is about 595.4687669484.

Adding to 211143133 its reverse (331341112), we get a palindrome (542484245).

The spelling of 211143133 in words is "two hundred eleven million, one hundred forty-three thousand, one hundred thirty-three".