121706502010117 has 4 divisors (see below), whose sum is σ = 121803945167500. Its totient is φ = 121609058852736.

The previous prime is 121706502010109. The next prime is 121706502010127. The reversal of 121706502010117 is 711010205607121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44639155012516 + 77067346997601 = 6681254^2 + 8778801^2 .

It is a cyclic number.

It is not a de Polignac number, because 121706502010117 - 2³ = 121706502010109 is a prime.

It is a super-2 number, since 2×121706502010117² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121706502010127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48721576818 + ... + 48721579315.

It is an arithmetic number, because the mean of its divisors is an integer number (30450986291875).

Almost surely, 2^{121706502010117} is an apocalyptic number.

It is an amenable number.

121706502010117 is a deficient number, since it is larger than the sum of its proper divisors (97443157383).

121706502010117 is an equidigital number, since it uses as much as digits as its factorization.

121706502010117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97443157382.

The product of its (nonzero) digits is 5880, while the sum is 34.

Adding to 121706502010117 its reverse (711010205607121), we get a palindrome (832716707617238).

The spelling of 121706502010117 in words is "one hundred twenty-one trillion, seven hundred six billion, five hundred two million, ten thousand, one hundred seventeen".