1212311133 has 48 divisors (see below), whose sum is σ = 1961481600. Its totient is φ = 715305600.

The previous prime is 1212311119. The next prime is 1212311137. The reversal of 1212311133 is 3311132121.

It is not a de Polignac number, because 1212311133 - 2⁵ = 1212311101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212311137) 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 in 47 ways as a sum of consecutive naturals, for example, 621043 + ... + 622991.

It is an arithmetic number, because the mean of its divisors is an integer number (40864200).

Almost surely, 2^1212311133 is an apocalyptic number.

It is an amenable number.

1212311133 is a deficient number, since it is larger than the sum of its proper divisors (749170467).

1212311133 is a wasteful number, since it uses less digits than its factorization.

1212311133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130 (or 2127 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1212311133 is about 34818.2586152725. The cubic root of 1212311133 is about 1066.2802483875.

Adding to 1212311133 its reverse (3311132121), we get a palindrome (4523443254).

The spelling of 1212311133 in words is "one billion, two hundred twelve million, three hundred eleven thousand, one hundred thirty-three".