121305440211 has 8 divisors (see below), whose sum is σ = 165181876224. Its totient is φ = 79149648840.

The previous prime is 121305440209. The next prime is 121305440213. The reversal of 121305440211 is 112044503121.

It is an interprime number because it is at equal distance from previous prime (121305440209) and next prime (121305440213).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121305440211 - 2¹ = 121305440209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121305440213) 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 7 ways as a sum of consecutive naturals, for example, 430160995 + ... + 430161276.

It is an arithmetic number, because the mean of its divisors is an integer number (20647734528).

Almost surely, 2^121305440211 is an apocalyptic number.

121305440211 is a deficient number, since it is larger than the sum of its proper divisors (43876436013).

121305440211 is an equidigital number, since it uses as much as digits as its factorization.

121305440211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860322321.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 121305440211 its reverse (112044503121), we get a palindrome (233349943332).

The spelling of 121305440211 in words is "one hundred twenty-one billion, three hundred five million, four hundred forty thousand, two hundred eleven".