121400343004121 has 16 divisors (see below), whose sum is σ = 128025870676800. Its totient is φ = 114798426882048.

The previous prime is 121400343004103. The next prime is 121400343004123.

121400343004121 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121400343004121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121400343004123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919849625 + ... + 919981593.

It is an arithmetic number, because the mean of its divisors is an integer number (8001616917300).

Almost surely, 2^{121400343004121} is an apocalyptic number.

It is an amenable number.

121400343004121 is a deficient number, since it is larger than the sum of its proper divisors (6625527672679).

121400343004121 is a wasteful number, since it uses less digits than its factorization.

121400343004121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221048.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 121400343004121 in words is "one hundred twenty-one trillion, four hundred billion, three hundred forty-three million, four thousand, one hundred twenty-one".