1212311523353 has 24 divisors (see below), whose sum is σ = 1440932435712. Its totient is φ = 1016529744384.

The previous prime is 1212311523271. The next prime is 1212311523361. The reversal of 1212311523353 is 3533251132121.

It is not a de Polignac number, because 1212311523353 - 2²⁰ = 1212310474777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1212311523253) 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 in 23 ways as a sum of consecutive naturals, for example, 4741676 + ... + 4990802.

It is an arithmetic number, because the mean of its divisors is an integer number (60038851488).

Almost surely, 2^{1212311523353} is an apocalyptic number.

It is an amenable number.

1212311523353 is a deficient number, since it is larger than the sum of its proper divisors (228620912359).

1212311523353 is a wasteful number, since it uses less digits than its factorization.

1212311523353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251301 (or 251294 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

Adding to 1212311523353 its reverse (3533251132121), we get a palindrome (4745562655474).

The spelling of 1212311523353 in words is "one trillion, two hundred twelve billion, three hundred eleven million, five hundred twenty-three thousand, three hundred fifty-three".