1211010211 has 2 divisors, whose sum is σ = 1211010212. Its totient is φ = 1211010210.

The previous prime is 1211010209. The next prime is 1211010323. The reversal of 1211010211 is 1120101121.

It is a weak prime.

It is an emirp because it is prime and its reverse (1120101121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211010211 - 2¹ = 1211010209 is a prime.

It is a super-2 number, since 2×1211010211² = 2933091462292529042, which contains 22 as substring.

Together with 1211010209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1211010611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605505105 + 605505106.

It is an arithmetic number, because the mean of its divisors is an integer number (605505106).

Almost surely, 2^1211010211 is an apocalyptic number.

1211010211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211010211 is an equidigital number, since it uses as much as digits as its factorization.

1211010211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1211010211 is about 34799.5719944944. The cubic root of 1211010211 is about 1065.8987060945.

Adding to 1211010211 its reverse (1120101121), we get a palindrome (2331111332).

The spelling of 1211010211 in words is "one billion, two hundred eleven million, ten thousand, two hundred eleven".