12101110110121 has 8 divisors (see below), whose sum is σ = 12104280513864. Its totient is φ = 12097939927680.

The previous prime is 12101110110107. The next prime is 12101110110137. The reversal of 12101110110121 is 12101101110121.

It can be written as a sum of positive squares in 4 ways, for example, as 1125373018896 + 10975737091225 = 1060836^2 + 3312965^2 .

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-12101110110121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101110110421) 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, 188408805 + ... + 188473021.

It is an arithmetic number, because the mean of its divisors is an integer number (1513035064233).

Almost surely, 2^{12101110110121} is an apocalyptic number.

It is an amenable number.

12101110110121 is a deficient number, since it is larger than the sum of its proper divisors (3170403743).

12101110110121 is an equidigital number, since it uses as much as digits as its factorization.

12101110110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110651.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 12101110110121 its reverse (12101101110121), we get a palindrome (24202211220242).

Subtracting from 12101110110121 its reverse (12101101110121), we obtain a square (9000000 = 3000²).

The spelling of 12101110110121 in words is "twelve trillion, one hundred one billion, one hundred ten million, one hundred ten thousand, one hundred twenty-one".