121230242032121 has 4 divisors (see below), whose sum is σ = 121231120312932. Its totient is φ = 121229363751312.

The previous prime is 121230242032111. The next prime is 121230242032127.

121230242032121 is nontrivially palindromic in base 10.

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 92564872492096 + 28665369540025 = 9621064^2 + 5354005^2 .

It is a cyclic number.

It is not a de Polignac number, because 121230242032121 - 2¹⁰ = 121230242031097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121230242032127) 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 3 ways as a sum of consecutive naturals, for example, 438933326 + ... + 439209431.

It is an arithmetic number, because the mean of its divisors is an integer number (30307780078233).

Almost surely, 2^{121230242032121} is an apocalyptic number.

It is an amenable number.

121230242032121 is a deficient number, since it is larger than the sum of its proper divisors (878280811).

121230242032121 is an equidigital number, since it uses as much as digits as its factorization.

121230242032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878280810.

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

The spelling of 121230242032121 in words is "one hundred twenty-one trillion, two hundred thirty billion, two hundred forty-two million, thirty-two thousand, one hundred twenty-one".