12121614 has 24 divisors (see below), whose sum is σ = 26875992. Its totient is φ = 3946320.

The previous prime is 12121583. The next prime is 12121619. The reversal of 12121614 is 41612121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121619) 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 11 ways as a sum of consecutive naturals, for example, 7057 + ... + 8604.

It is an arithmetic number, because the mean of its divisors is an integer number (1119833).

Almost surely, 2^12121614 is an apocalyptic number.

12121614 is an abundant number, since it is smaller than the sum of its proper divisors (14754378).

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

12121614 is a wasteful number, since it uses less digits than its factorization.

12121614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712 (or 15709 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 12121614 is about 3481.6108340824. The cubic root of 12121614 is about 229.7136575236.

Adding to 12121614 its reverse (41612121), we get a palindrome (53733735).

The spelling of 12121614 in words is "twelve million, one hundred twenty-one thousand, six hundred fourteen".