121416502115161 has 6 divisors (see below), whose sum is σ = 133457808110186. Its totient is φ = 110378638286400.

The previous prime is 121416502115123. The next prime is 121416502115221. The reversal of 121416502115161 is 161511205614121.

It can be written as a sum of positive squares in only one way, i.e., 61012595835136 + 60403906280025 = 7811056^2 + 7771995^2 .

It is not a de Polignac number, because 121416502115161 - 2¹¹ = 121416502113113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121416502115161.

It is not an unprimeable number, because it can be changed into a prime (121416502110161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 501721083000 + ... + 501721083241.

Almost surely, 2^{121416502115161} is an apocalyptic number.

121416502115161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121416502115161 is a deficient number, since it is larger than the sum of its proper divisors (12041305995025).

121416502115161 is a wasteful number, since it uses less digits than its factorization.

121416502115161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003442166263 (or 1003442166252 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 37.

Adding to 121416502115161 its reverse (161511205614121), we get a palindrome (282927707729282).

The spelling of 121416502115161 in words is "one hundred twenty-one trillion, four hundred sixteen billion, five hundred two million, one hundred fifteen thousand, one hundred sixty-one".