12011001282121 has 2 divisors, whose sum is σ = 12011001282122. Its totient is φ = 12011001282120.

The previous prime is 12011001282083. The next prime is 12011001282157. The reversal of 12011001282121 is 12128210011021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11662641633721 + 348359648400 = 3415061^2 + 590220^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011001282121 - 2²⁷ = 12010867064393 is a prime.

It is a super-2 number, since 2×12011001282121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12011001282092 and 12011001282101.

It is not a weakly prime, because it can be changed into another prime (12011001280121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005500641060 + 6005500641061.

It is an arithmetic number, because the mean of its divisors is an integer number (6005500641061).

Almost surely, 2^{12011001282121} is an apocalyptic number.

It is an amenable number.

12011001282121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011001282121 is an equidigital number, since it uses as much as digits as its factorization.

12011001282121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 12011001282121 its reverse (12128210011021), we get a palindrome (24139211293142).

The spelling of 12011001282121 in words is "twelve trillion, eleven billion, one million, two hundred eighty-two thousand, one hundred twenty-one".