12408121 has 8 divisors (see below), whose sum is σ = 14248800. Its totient is φ = 10686240.

The previous prime is 12408119. The next prime is 12408127. The reversal of 12408121 is 12180421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12408121 - 2¹ = 12408119 is a prime.

It is a super-2 number, since 2×12408121² = 307922933501282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12408127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29476 + ... + 29893.

It is an arithmetic number, because the mean of its divisors is an integer number (1781100).

Almost surely, 2^12408121 is an apocalyptic number.

12408121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12408121 is a deficient number, since it is larger than the sum of its proper divisors (1840679).

12408121 is a wasteful number, since it uses less digits than its factorization.

12408121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59399.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 12408121 is about 3522.5162881100. The cubic root of 12408121 is about 231.5094233981.

Adding to 12408121 its reverse (12180421), we get a palindrome (24588542).

The spelling of 12408121 in words is "twelve million, four hundred eight thousand, one hundred twenty-one".