12221420011 has 4 divisors (see below), whose sum is σ = 12481450272. Its totient is φ = 11961389752.

The previous prime is 12221420009. The next prime is 12221420017. The reversal of 12221420011 is 11002412221.

12221420011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11002412221 = 263 ⋅41834267.

It is a cyclic number.

It is not a de Polignac number, because 12221420011 - 2¹ = 12221420009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221420017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130015060 + ... + 130015153.

It is an arithmetic number, because the mean of its divisors is an integer number (3120362568).

Almost surely, 2^12221420011 is an apocalyptic number.

12221420011 is a deficient number, since it is larger than the sum of its proper divisors (260030261).

12221420011 is an equidigital number, since it uses as much as digits as its factorization.

12221420011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260030260.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12221420011 its reverse (11002412221), we get a palindrome (23223832232).

The spelling of 12221420011 in words is "twelve billion, two hundred twenty-one million, four hundred twenty thousand, eleven".