12111202200121 has 4 divisors (see below), whose sum is σ = 12183724369152. Its totient is φ = 12038680031092.

The previous prime is 12111202200107. The next prime is 12111202200179. The reversal of 12111202200121 is 12100220211121.

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 12111202200121 - 2²⁹ = 12110665329209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111202200095 and 12111202200104.

It is not an unprimeable number, because it can be changed into a prime (12111202200101) 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, 36261084265 + ... + 36261084598.

It is an arithmetic number, because the mean of its divisors is an integer number (3045931092288).

Almost surely, 2^{12111202200121} is an apocalyptic number.

It is an amenable number.

12111202200121 is a deficient number, since it is larger than the sum of its proper divisors (72522169031).

12111202200121 is an equidigital number, since it uses as much as digits as its factorization.

12111202200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72522169030.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12111202200121 its reverse (12100220211121), we get a palindrome (24211422411242).

The spelling of 12111202200121 in words is "twelve trillion, one hundred eleven billion, two hundred two million, two hundred thousand, one hundred twenty-one".