12123120121206 has 16 divisors (see below), whose sum is σ = 24247349512704. Its totient is φ = 4040855162024.

The previous prime is 12123120121109. The next prime is 12123120121219. The reversal of 12123120121206 is 60212102132121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46077486 + ... + 46339841.

It is an arithmetic number, because the mean of its divisors is an integer number (1515459344544).

Almost surely, 2^{12123120121206} is an apocalyptic number.

12123120121206 is an abundant number, since it is smaller than the sum of its proper divisors (12124229391498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123120121206 is a wasteful number, since it uses less digits than its factorization.

12123120121206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92439195.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 12123120121206 its reverse (60212102132121), we get a palindrome (72335222253327).

The spelling of 12123120121206 in words is "twelve trillion, one hundred twenty-three billion, one hundred twenty million, one hundred twenty-one thousand, two hundred six".