121304201023 has 4 divisors (see below), whose sum is σ = 121343096160. Its totient is φ = 121265305888.

The previous prime is 121304201017. The next prime is 121304201041. The reversal of 121304201023 is 320102403121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121304201023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121304201323) 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, 19442890 + ... + 19449127.

It is an arithmetic number, because the mean of its divisors is an integer number (30335774040).

Almost surely, 2^121304201023 is an apocalyptic number.

121304201023 is a deficient number, since it is larger than the sum of its proper divisors (38895137).

121304201023 is an equidigital number, since it uses as much as digits as its factorization.

121304201023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38895136.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121304201023 its reverse (320102403121), we get a palindrome (441406604144).

The spelling of 121304201023 in words is "one hundred twenty-one billion, three hundred four million, two hundred one thousand, twenty-three".