12044100121 has 4 divisors (see below), whose sum is σ = 12567756672. Its totient is φ = 11520443572.

The previous prime is 12044100097. The next prime is 12044100137. The reversal of 12044100121 is 12100144021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12044100121 - 2¹⁵ = 12044067353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12044100095 and 12044100104.

It is not an unprimeable number, because it can be changed into a prime (12044100221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261828241 + ... + 261828286.

It is an arithmetic number, because the mean of its divisors is an integer number (3141939168).

Almost surely, 2^12044100121 is an apocalyptic number.

It is an amenable number.

12044100121 is a deficient number, since it is larger than the sum of its proper divisors (523656551).

12044100121 is an equidigital number, since it uses as much as digits as its factorization.

12044100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523656550.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12044100121 its reverse (12100144021), we get a palindrome (24144244142).

The spelling of 12044100121 in words is "twelve billion, forty-four million, one hundred thousand, one hundred twenty-one".