12112121441 has 8 divisors (see below), whose sum is σ = 13843492224. Its totient is φ = 10381017600.

The previous prime is 12112121419. The next prime is 12112121453. The reversal of 12112121441 is 14412121121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112121441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12112121491) 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, 42401 + ... + 161313.

It is an arithmetic number, because the mean of its divisors is an integer number (1730436528).

Almost surely, 2^12112121441 is an apocalyptic number.

It is an amenable number.

12112121441 is a deficient number, since it is larger than the sum of its proper divisors (1731370783).

12112121441 is a wasteful number, since it uses less digits than its factorization.

12112121441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133471.

The product of its digits is 128, while the sum is 20.

Adding to 12112121441 its reverse (14412121121), we get a palindrome (26524242562).

The spelling of 12112121441 in words is "twelve billion, one hundred twelve million, one hundred twenty-one thousand, four hundred forty-one".