1211233411 has 2 divisors, whose sum is σ = 1211233412. Its totient is φ = 1211233410.

The previous prime is 1211233403. The next prime is 1211233423. The reversal of 1211233411 is 1143321121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211233411 - 2³ = 1211233403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211233481) 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, 605616705 + 605616706.

It is an arithmetic number, because the mean of its divisors is an integer number (605616706).

Almost surely, 2^1211233411 is an apocalyptic number.

1211233411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211233411 is an equidigital number, since it uses as much as digits as its factorization.

1211233411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

The square root of 1211233411 is about 34802.7787827352. The cubic root of 1211233411 is about 1065.9641869562.

Adding to 1211233411 its reverse (1143321121), we get a palindrome (2354554532).

The spelling of 1211233411 in words is "one billion, two hundred eleven million, two hundred thirty-three thousand, four hundred eleven".