12122221010117 has 2 divisors, whose sum is σ = 12122221010118. Its totient is φ = 12122221010116.

The previous prime is 12122221010111. The next prime is 12122221010143. The reversal of 12122221010117 is 71101012222121.

12122221010117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6192562572196 + 5929658437921 = 2488486^2 + 2435089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122221010117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12122221010092 and 12122221010101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122221010111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061110505058 + 6061110505059.

It is an arithmetic number, because the mean of its divisors is an integer number (6061110505059).

Almost surely, 2^{12122221010117} is an apocalyptic number.

It is an amenable number.

12122221010117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122221010117 is an equidigital number, since it uses as much as digits as its factorization.

12122221010117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 12122221010117 its reverse (71101012222121), we get a palindrome (83223233232238).

The spelling of 12122221010117 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, ten thousand, one hundred seventeen".