121202120120117 has 2 divisors, whose sum is σ = 121202120120118. Its totient is φ = 121202120120116.

The previous prime is 121202120120077. The next prime is 121202120120153. The reversal of 121202120120117 is 711021021202121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107479644483121 + 13722475636996 = 10367239^2 + 3704386^2 .

It is a cyclic number.

It is not a de Polignac number, because 121202120120117 - 2²⁶ = 121202053011253 is a prime.

It is a super-2 number, since 2×121202120120117² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121202120120092 and 121202120120101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121202120120197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60601060060058 + 60601060060059.

It is an arithmetic number, because the mean of its divisors is an integer number (60601060060059).

Almost surely, 2^{121202120120117} is an apocalyptic number.

It is an amenable number.

121202120120117 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202120120117 is an equidigital number, since it uses as much as digits as its factorization.

121202120120117 is an odious number, because the sum of its binary digits is odd.

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

Adding to 121202120120117 its reverse (711021021202121), we get a palindrome (832223141322238).

The spelling of 121202120120117 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred twenty million, one hundred twenty thousand, one hundred seventeen".