1213612512233 has 16 divisors (see below), whose sum is σ = 1339231185600. Its totient is φ = 1099689972480.

The previous prime is 1213612512181. The next prime is 1213612512247. The reversal of 1213612512233 is 3322152163121.

It is not a de Polignac number, because 1213612512233 - 2⁸ = 1213612511977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213612512233.

It is not an unprimeable number, because it can be changed into a prime (1213642512233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1076408 + ... + 1893641.

It is an arithmetic number, because the mean of its divisors is an integer number (83701949100).

Almost surely, 2^{1213612512233} is an apocalyptic number.

It is an amenable number.

1213612512233 is a deficient number, since it is larger than the sum of its proper divisors (125618673367).

1213612512233 is an equidigital number, since it uses as much as digits as its factorization.

1213612512233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970389 (or 2970367 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

Adding to 1213612512233 its reverse (3322152163121), we get a palindrome (4535764675354).

The spelling of 1213612512233 in words is "one trillion, two hundred thirteen billion, six hundred twelve million, five hundred twelve thousand, two hundred thirty-three".