123210123221212 has 12 divisors (see below), whose sum is σ = 215642519300376. Its totient is φ = 61597974849680.

The previous prime is 123210123221161. The next prime is 123210123221249. The reversal of 123210123221212 is 212122321012321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1771651114 + ... + 1771720657.

It is an arithmetic number, because the mean of its divisors is an integer number (17970209941698).

Almost surely, 2^{123210123221212} is an apocalyptic number.

It is an amenable number.

123210123221212 is a deficient number, since it is larger than the sum of its proper divisors (92432396079164).

123210123221212 is a wasteful number, since it uses less digits than its factorization.

123210123221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3543380468 (or 3543380466 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 123210123221212 its reverse (212122321012321), we get a palindrome (335332444233533).

The spelling of 123210123221212 in words is "one hundred twenty-three trillion, two hundred ten billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred twelve".