12210123231211 has 4 divisors (see below), whose sum is σ = 12232445212072. Its totient is φ = 12187801250352.

The previous prime is 12210123231197. The next prime is 12210123231247. The reversal of 12210123231211 is 11213232101221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12210123231211 - 2²⁷ = 12209989013483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210123231011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11160989610 + ... + 11160990703.

It is an arithmetic number, because the mean of its divisors is an integer number (3058111303018).

Almost surely, 2^{12210123231211} is an apocalyptic number.

12210123231211 is a deficient number, since it is larger than the sum of its proper divisors (22321980861).

12210123231211 is an equidigital number, since it uses as much as digits as its factorization.

12210123231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22321980860.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 12210123231211 its reverse (11213232101221), we get a palindrome (23423355332432).

The spelling of 12210123231211 in words is "twelve trillion, two hundred ten billion, one hundred twenty-three million, two hundred thirty-one thousand, two hundred eleven".