211133249 has 2 divisors, whose sum is σ = 211133250. Its totient is φ = 211133248.

The previous prime is 211133213. The next prime is 211133287. The reversal of 211133249 is 942331112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128414224 + 82719025 = 11332^2 + 9095^2 .

It is a cyclic number.

It is not a de Polignac number, because 211133249 - 2¹² = 211129153 is a prime.

It is equal to p_11660624 and since 211133249 and 11660624 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (211133449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105566624 + 105566625.

It is an arithmetic number, because the mean of its divisors is an integer number (105566625).

Almost surely, 2^211133249 is an apocalyptic number.

It is an amenable number.

211133249 is a deficient number, since it is larger than the sum of its proper divisors (1).

211133249 is an equidigital number, since it uses as much as digits as its factorization.

211133249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 211133249 is about 14530.4249421688. The cubic root of 211133249 is about 595.4594751392.

The spelling of 211133249 in words is "two hundred eleven million, one hundred thirty-three thousand, two hundred forty-nine".