12342121 has 6 divisors (see below), whose sum is σ = 13566266. Its totient is φ = 11220000.

The previous prime is 12342073. The next prime is 12342149. The reversal of 12342121 is 12124321.

12342121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7502121 + 4840000 = 2739^2 + 2200^2 .

It is not a de Polignac number, because 12342121 - 2¹³ = 12333929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12342095 and 12342104.

It is not an unprimeable number, because it can be changed into a prime (12342721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50880 + ... + 51121.

Almost surely, 2^12342121 is an apocalyptic number.

12342121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12342121 is a deficient number, since it is larger than the sum of its proper divisors (1224145).

12342121 is a wasteful number, since it uses less digits than its factorization.

12342121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102023 (or 102012 counting only the distinct ones).

The product of its digits is 96, while the sum is 16.

The square root of 12342121 is about 3513.1354941135. The cubic root of 12342121 is about 231.0982197585.

Adding to 12342121 its reverse (12124321), we get a palindrome (24466442).

The spelling of 12342121 in words is "twelve million, three hundred forty-two thousand, one hundred twenty-one".