12100110121 has 8 divisors (see below), whose sum is σ = 13416516288. Its totient is φ = 10819770000.

The previous prime is 12100110101. The next prime is 12100110149. The reversal of 12100110121 is 12101100121.

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-12100110121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100110098 and 12100110107.

It is not an unprimeable number, because it can be changed into a prime (12100110101) 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, 9015805 + ... + 9017146.

It is an arithmetic number, because the mean of its divisors is an integer number (1677064536).

Almost surely, 2^12100110121 is an apocalyptic number.

12100110121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12100110121 is a deficient number, since it is larger than the sum of its proper divisors (1316406167).

12100110121 is a wasteful number, since it uses less digits than its factorization.

12100110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18033023.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12100110121 its reverse (12101100121), we get a palindrome (24201210242).

It can be divided in two parts, 12100 and 110121, that added together give a palindrome (122221).

The spelling of 12100110121 in words is "twelve billion, one hundred million, one hundred ten thousand, one hundred twenty-one".