12401121211 has 8 divisors (see below), whose sum is σ = 12706336944. Its totient is φ = 12096036480.

The previous prime is 12401121179. The next prime is 12401121283. The reversal of 12401121211 is 11212110421.

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

It is not a de Polignac number, because 12401121211 - 2⁵ = 12401121179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12401121511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174895 + ... + 235351.

It is an arithmetic number, because the mean of its divisors is an integer number (1588292118).

Almost surely, 2^12401121211 is an apocalyptic number.

12401121211 is a deficient number, since it is larger than the sum of its proper divisors (305215733).

12401121211 is an equidigital number, since it uses as much as digits as its factorization.

12401121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65501.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12401121211 its reverse (11212110421), we get a palindrome (23613231632).

The spelling of 12401121211 in words is "twelve billion, four hundred one million, one hundred twenty-one thousand, two hundred eleven".