1212334111 has 2 divisors, whose sum is σ = 1212334112. Its totient is φ = 1212334110.

The previous prime is 1212334091. The next prime is 1212334127. The reversal of 1212334111 is 1114332121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212334111 - 2⁹ = 1212333599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212332111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606167055 + 606167056.

It is an arithmetic number, because the mean of its divisors is an integer number (606167056).

Almost surely, 2^1212334111 is an apocalyptic number.

1212334111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212334111 is an equidigital number, since it uses as much as digits as its factorization.

1212334111 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 1212334111 is about 34818.5885842606. The cubic root of 1212334111 is about 1066.2869850609.

Adding to 1212334111 its reverse (1114332121), we get a palindrome (2326666232).

The spelling of 1212334111 in words is "one billion, two hundred twelve million, three hundred thirty-four thousand, one hundred eleven".