121203444302121 has 16 divisors (see below), whose sum is σ = 171196428939264. Its totient is φ = 76011138157824.

The previous prime is 121203444302099. The next prime is 121203444302147.

It is a happy number.

121203444302121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 121203444302121 - 2⁵ = 121203444302089 is a prime.

It is a super-3 number, since 3×121203444302121³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121203444302191) 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, 594925225 + ... + 595128918.

It is an arithmetic number, because the mean of its divisors is an integer number (10699776808704).

Almost surely, 2^{121203444302121} is an apocalyptic number.

It is an amenable number.

121203444302121 is a deficient number, since it is larger than the sum of its proper divisors (49992984637143).

121203444302121 is a wasteful number, since it uses less digits than its factorization.

121203444302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190056160.

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 121203444302121 in words is "one hundred twenty-one trillion, two hundred three billion, four hundred forty-four million, three hundred two thousand, one hundred twenty-one".