12123211031222 has 4 divisors (see below), whose sum is σ = 18184816546836. Its totient is φ = 6061605515610.

The previous prime is 12123211031221. The next prime is 12123211031227. The reversal of 12123211031222 is 22213011232121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123211031221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030802757804 + ... + 3030802757807.

It is an arithmetic number, because the mean of its divisors is an integer number (4546204136709).

Almost surely, 2^{12123211031222} is an apocalyptic number.

12123211031222 is a deficient number, since it is larger than the sum of its proper divisors (6061605515614).

12123211031222 is an equidigital number, since it uses as much as digits as its factorization.

12123211031222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061605515613.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12123211031222 its reverse (22213011232121), we get a palindrome (34336222263343).

The spelling of 12123211031222 in words is "twelve trillion, one hundred twenty-three billion, two hundred eleven million, thirty-one thousand, two hundred twenty-two".