121216606110053 has 4 divisors (see below), whose sum is σ = 128346994704780. Its totient is φ = 114086217515328.

The previous prime is 121216606110049. The next prime is 121216606110097. The reversal of 121216606110053 is 350011606612121.

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 54667198950529 + 66549407159524 = 7393727^2 + 8157782^2 .

It is a cyclic number.

It is not a de Polignac number, because 121216606110053 - 2² = 121216606110049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121216606109995 and 121216606110022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121216606310053) 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, 3565194297338 + ... + 3565194297371.

It is an arithmetic number, because the mean of its divisors is an integer number (32086748676195).

Almost surely, 2^{121216606110053} is an apocalyptic number.

It is an amenable number.

121216606110053 is a deficient number, since it is larger than the sum of its proper divisors (7130388594727).

121216606110053 is an equidigital number, since it uses as much as digits as its factorization.

121216606110053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7130388594726.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 121216606110053 in words is "one hundred twenty-one trillion, two hundred sixteen billion, six hundred six million, one hundred ten thousand, fifty-three".