211124149 has 2 divisors, whose sum is σ = 211124150. Its totient is φ = 211124148.

The previous prime is 211124131. The next prime is 211124159. The reversal of 211124149 is 941421112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211120900 + 3249 = 14530^2 + 57^2 .

It is a cyclic number.

It is not a de Polignac number, because 211124149 - 2¹¹ = 211122101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211124119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105562074 + 105562075.

It is an arithmetic number, because the mean of its divisors is an integer number (105562075).

Almost surely, 2^211124149 is an apocalyptic number.

It is an amenable number.

211124149 is a deficient number, since it is larger than the sum of its proper divisors (1).

211124149 is an equidigital number, since it uses as much as digits as its factorization.

211124149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 25.

The square root of 211124149 is about 14530.1118027357. Note that the first 3 decimals coincide. The cubic root of 211124149 is about 595.4509201009.

The spelling of 211124149 in words is "two hundred eleven million, one hundred twenty-four thousand, one hundred forty-nine".