1211422411 has 2 divisors, whose sum is σ = 1211422412. Its totient is φ = 1211422410.

The previous prime is 1211422379. The next prime is 1211422441. The reversal of 1211422411 is 1142241121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211422411 - 2⁵ = 1211422379 is a prime.

It is a super-3 number, since 3×1211422411³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1211422441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605711205 + 605711206.

It is an arithmetic number, because the mean of its divisors is an integer number (605711206).

Almost surely, 2^1211422411 is an apocalyptic number.

1211422411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211422411 is an equidigital number, since it uses as much as digits as its factorization.

1211422411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 128, while the sum is 19.

The square root of 1211422411 is about 34805.4939772445. The cubic root of 1211422411 is about 1066.0196281705.

Adding to 1211422411 its reverse (1142241121), we get a palindrome (2353663532).

The spelling of 1211422411 in words is "one billion, two hundred eleven million, four hundred twenty-two thousand, four hundred eleven".