242130211 has 2 divisors, whose sum is σ = 242130212. Its totient is φ = 242130210.

The previous prime is 242130209. The next prime is 242130241. The reversal of 242130211 is 112031242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242130211 - 2¹ = 242130209 is a prime.

Together with 242130209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (242130241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121065105 + 121065106.

It is an arithmetic number, because the mean of its divisors is an integer number (121065106).

Almost surely, 2^242130211 is an apocalyptic number.

242130211 is a deficient number, since it is larger than the sum of its proper divisors (1).

242130211 is an equidigital number, since it uses as much as digits as its factorization.

242130211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 242130211 is about 15560.5337633386. The cubic root of 242130211 is about 623.2797160614.

Adding to 242130211 its reverse (112031242), we get a palindrome (354161453).

The spelling of 242130211 in words is "two hundred forty-two million, one hundred thirty thousand, two hundred eleven".