1212323210233 has 4 divisors (see below), whose sum is σ = 1212331542928. Its totient is φ = 1212314877540.

The previous prime is 1212323210173. The next prime is 1212323210243. The reversal of 1212323210233 is 3320123232121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212323210233 - 2²⁹ = 1211786339321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212323210198 and 1212323210207.

It is not an unprimeable number, because it can be changed into a prime (1212323210243) 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 3 ways as a sum of consecutive naturals, for example, 3944163 + ... + 4240408.

It is an arithmetic number, because the mean of its divisors is an integer number (303082885732).

Almost surely, 2^{1212323210233} is an apocalyptic number.

It is an amenable number.

1212323210233 is a deficient number, since it is larger than the sum of its proper divisors (8332695).

1212323210233 is an equidigital number, since it uses as much as digits as its factorization.

1212323210233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8332694.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1212323210233 its reverse (3320123232121), we get a palindrome (4532446442354).

The spelling of 1212323210233 in words is "one trillion, two hundred twelve billion, three hundred twenty-three million, two hundred ten thousand, two hundred thirty-three".