121104121217 has 2 divisors, whose sum is σ = 121104121218. Its totient is φ = 121104121216.

The previous prime is 121104121169. The next prime is 121104121253. The reversal of 121104121217 is 712121401121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121103304001 + 817216 = 347999^2 + 904^2 .

It is a cyclic number.

It is not a de Polignac number, because 121104121217 - 2¹⁸ = 121103859073 is a prime.

It is a super-2 number, since 2×121104121217² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121104121192 and 121104121201.

It is not a weakly prime, because it can be changed into another prime (121104121277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60552060608 + 60552060609.

It is an arithmetic number, because the mean of its divisors is an integer number (60552060609).

Almost surely, 2^121104121217 is an apocalyptic number.

It is an amenable number.

121104121217 is a deficient number, since it is larger than the sum of its proper divisors (1).

121104121217 is an equidigital number, since it uses as much as digits as its factorization.

121104121217 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 121104121217 its reverse (712121401121), we get a palindrome (833225522338).

The spelling of 121104121217 in words is "one hundred twenty-one billion, one hundred four million, one hundred twenty-one thousand, two hundred seventeen".