1133212111 has 2 divisors, whose sum is σ = 1133212112. Its totient is φ = 1133212110.

The previous prime is 1133212109. The next prime is 1133212121. The reversal of 1133212111 is 1112123311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1133212111 - 2¹ = 1133212109 is a prime.

Together with 1133212109, 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 (1133212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566606055 + 566606056.

It is an arithmetic number, because the mean of its divisors is an integer number (566606056).

Almost surely, 2^1133212111 is an apocalyptic number.

1133212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133212111 is an equidigital number, since it uses as much as digits as its factorization.

1133212111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36, while the sum is 16.

The square root of 1133212111 is about 33663.2159931282. The cubic root of 1133212111 is about 1042.5664275330.

Adding to 1133212111 its reverse (1112123311), we get a palindrome (2245335422).

The spelling of 1133212111 in words is "one billion, one hundred thirty-three million, two hundred twelve thousand, one hundred eleven".