12312221213302 has 4 divisors (see below), whose sum is σ = 18468331819956. Its totient is φ = 6156110606650.

The previous prime is 12312221213291. The next prime is 12312221213317. The reversal of 12312221213302 is 20331212221321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078055303324 + ... + 3078055303327.

It is an arithmetic number, because the mean of its divisors is an integer number (4617082954989).

Almost surely, 2^{12312221213302} is an apocalyptic number.

12312221213302 is a deficient number, since it is larger than the sum of its proper divisors (6156110606654).

12312221213302 is an equidigital number, since it uses as much as digits as its factorization.

12312221213302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156110606653.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12312221213302 its reverse (20331212221321), we get a palindrome (32643433434623).

The spelling of 12312221213302 in words is "twelve trillion, three hundred twelve billion, two hundred twenty-one million, two hundred thirteen thousand, three hundred two".