121321030321211 has 4 divisors (see below), whose sum is σ = 138652606081392. Its totient is φ = 103989454561032.

The previous prime is 121321030321199. The next prime is 121321030321229. The reversal of 121321030321211 is 112123030123121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121321030321211 - 2¹⁴ = 121321030304827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121321030320211) 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, 8665787880080 + ... + 8665787880093.

It is an arithmetic number, because the mean of its divisors is an integer number (34663151520348).

Almost surely, 2^{121321030321211} is an apocalyptic number.

121321030321211 is a deficient number, since it is larger than the sum of its proper divisors (17331575760181).

121321030321211 is an equidigital number, since it uses as much as digits as its factorization.

121321030321211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17331575760180.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 121321030321211 its reverse (112123030123121), we get a palindrome (233444060444332).

The spelling of 121321030321211 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, thirty million, three hundred twenty-one thousand, two hundred eleven".