1212341311 has 2 divisors, whose sum is σ = 1212341312. Its totient is φ = 1212341310.

The previous prime is 1212341309. The next prime is 1212341321. The reversal of 1212341311 is 1131432121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212341311 - 2¹ = 1212341309 is a prime.

Together with 1212341309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212341321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606170655 + 606170656.

It is an arithmetic number, because the mean of its divisors is an integer number (606170656).

Almost surely, 2^1212341311 is an apocalyptic number.

1212341311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212341311 is an equidigital number, since it uses as much as digits as its factorization.

1212341311 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 1212341311 is about 34818.6919771550. The cubic root of 1212341311 is about 1066.2890959342.

Adding to 1212341311 its reverse (1131432121), we get a palindrome (2343773432).

It can be divided in two parts, 121 and 2341311, that added together give a palindrome (2341432).

The spelling of 1212341311 in words is "one billion, two hundred twelve million, three hundred forty-one thousand, three hundred eleven".