12616121 has 12 divisors (see below), whose sum is σ = 15076992. Its totient is φ = 10340616.

The previous prime is 12616117. The next prime is 12616127. The reversal of 12616121 is 12161621.

It is not a de Polignac number, because 12616121 - 2² = 12616117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12616093 and 12616102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12616127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2000 + ... + 5406.

It is an arithmetic number, because the mean of its divisors is an integer number (1256416).

Almost surely, 2^12616121 is an apocalyptic number.

It is an amenable number.

12616121 is a deficient number, since it is larger than the sum of its proper divisors (2460871).

12616121 is an equidigital number, since it uses as much as digits as its factorization.

12616121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460 (or 3437 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

The square root of 12616121 is about 3551.9179326105. The cubic root of 12616121 is about 232.7958756743.

Adding to 12616121 its reverse (12161621), we get a palindrome (24777742).

The spelling of 12616121 in words is "twelve million, six hundred sixteen thousand, one hundred twenty-one".