121340545043121 has 12 divisors (see below), whose sum is σ = 175330051573248. Its totient is φ = 80865831126264.

The previous prime is 121340545043101. The next prime is 121340545043129.

121340545043121 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 40 + 5 + 450 + 43 + 121 = 666.

121340545043121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 121340545043121 - 2³⁵ = 121306185304753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121340545043129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2322103185 + ... + 2322155438.

It is an arithmetic number, because the mean of its divisors is an integer number (14610837631104).

Almost surely, 2^{121340545043121} is an apocalyptic number.

It is an amenable number.

121340545043121 is a deficient number, since it is larger than the sum of its proper divisors (53989506530127).

121340545043121 is a wasteful number, since it uses less digits than its factorization.

121340545043121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644261532 (or 4644261529 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 121340545043121 in words is "one hundred twenty-one trillion, three hundred forty billion, five hundred forty-five million, forty-three thousand, one hundred twenty-one".