121230123110201 has 4 divisors (see below), whose sum is σ = 138548712125952. Its totient is φ = 103911534094452.

The previous prime is 121230123110191. The next prime is 121230123110237. The reversal of 121230123110201 is 102011321032121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-121230123110201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121230123110501) 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, 8659294507865 + ... + 8659294507878.

It is an arithmetic number, because the mean of its divisors is an integer number (34637178031488).

Almost surely, 2^{121230123110201} is an apocalyptic number.

It is an amenable number.

121230123110201 is a deficient number, since it is larger than the sum of its proper divisors (17318589015751).

121230123110201 is an equidigital number, since it uses as much as digits as its factorization.

121230123110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17318589015750.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121230123110201 its reverse (102011321032121), we get a palindrome (223241444142322).

The spelling of 121230123110201 in words is "one hundred twenty-one trillion, two hundred thirty billion, one hundred twenty-three million, one hundred ten thousand, two hundred one".