123342121312 has 12 divisors (see below), whose sum is σ = 242829801396. Its totient is φ = 61671060640.

The previous prime is 123342121289. The next prime is 123342121319. The reversal of 123342121312 is 213121243321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123342121319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927220614 + ... + 1927220677.

It is an arithmetic number, because the mean of its divisors is an integer number (20235816783).

Almost surely, 2^123342121312 is an apocalyptic number.

It is an amenable number.

123342121312 is a deficient number, since it is larger than the sum of its proper divisors (119487680084).

123342121312 is an equidigital number, since it uses as much as digits as its factorization.

123342121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854441301 (or 3854441293 counting only the distinct ones).

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

Adding to 123342121312 its reverse (213121243321), we get a palindrome (336463364633).

The spelling of 123342121312 in words is "one hundred twenty-three billion, three hundred forty-two million, one hundred twenty-one thousand, three hundred twelve".