12011201121121 has 16 divisors (see below), whose sum is σ = 12859125350400. Its totient is φ = 11184896309328.

The previous prime is 12011201121079. The next prime is 12011201121131. The reversal of 12011201121121 is 12112110211021.

It is a cyclic number.

It is not a de Polignac number, because 12011201121121 - 2²⁵ = 12011167566689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011201121095 and 12011201121104.

It is not an unprimeable number, because it can be changed into a prime (12011201121131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9330960 + ... + 10539886.

It is an arithmetic number, because the mean of its divisors is an integer number (803695334400).

Almost surely, 2^{12011201121121} is an apocalyptic number.

It is an amenable number.

12011201121121 is a deficient number, since it is larger than the sum of its proper divisors (847924229279).

12011201121121 is a wasteful number, since it uses less digits than its factorization.

12011201121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217868.

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

Adding to 12011201121121 its reverse (12112110211021), we get a palindrome (24123311332142).

The spelling of 12011201121121 in words is "twelve trillion, eleven billion, two hundred one million, one hundred twenty-one thousand, one hundred twenty-one".