12021022111117 has 2 divisors, whose sum is σ = 12021022111118. Its totient is φ = 12021022111116.

The previous prime is 12021022111057. The next prime is 12021022111123. The reversal of 12021022111117 is 71111122012021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11930316332841 + 90705778276 = 3454029^2 + 301174^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021022111117 - 2⁷ = 12021022110989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021022111177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010511055558 + 6010511055559.

It is an arithmetic number, because the mean of its divisors is an integer number (6010511055559).

Almost surely, 2^{12021022111117} is an apocalyptic number.

It is an amenable number.

12021022111117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021022111117 is an equidigital number, since it uses as much as digits as its factorization.

12021022111117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 12021022111117 its reverse (71111122012021), we get a palindrome (83132144123138).

The spelling of 12021022111117 in words is "twelve trillion, twenty-one billion, twenty-two million, one hundred eleven thousand, one hundred seventeen".