211011137 has 2 divisors, whose sum is σ = 211011138. Its totient is φ = 211011136.

The previous prime is 211011127. The next prime is 211011167. The reversal of 211011137 is 731110112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120209296 + 90801841 = 10964^2 + 9529^2 .

It is a cyclic number.

It is not a de Polignac number, because 211011137 - 2¹⁶ = 210945601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211011127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505568 + 105505569.

It is an arithmetic number, because the mean of its divisors is an integer number (105505569).

Almost surely, 2^211011137 is an apocalyptic number.

It is an amenable number.

211011137 is a deficient number, since it is larger than the sum of its proper divisors (1).

211011137 is an equidigital number, since it uses as much as digits as its factorization.

211011137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 211011137 is about 14526.2223926250. Note that the first 3 decimals coincide. The cubic root of 211011137 is about 595.3446554373.

Adding to 211011137 its reverse (731110112), we get a palindrome (942121249).

The spelling of 211011137 in words is "two hundred eleven million, eleven thousand, one hundred thirty-seven".