121013201221023 has 4 divisors (see below), whose sum is σ = 161350934961368. Its totient is φ = 80675467480680.

The previous prime is 121013201221007. The next prime is 121013201221037. The reversal of 121013201221023 is 320122102310121.

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

It is not a de Polignac number, because 121013201221023 - 2⁴ = 121013201221007 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 (121013201221123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20168866870168 + ... + 20168866870173.

It is an arithmetic number, because the mean of its divisors is an integer number (40337733740342).

Almost surely, 2^{121013201221023} is an apocalyptic number.

121013201221023 is a deficient number, since it is larger than the sum of its proper divisors (40337733740345).

121013201221023 is an equidigital number, since it uses as much as digits as its factorization.

121013201221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40337733740344.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 121013201221023 its reverse (320122102310121), we get a palindrome (441135303531144).

The spelling of 121013201221023 in words is "one hundred twenty-one trillion, thirteen billion, two hundred one million, two hundred twenty-one thousand, twenty-three".