12221212210011 has 48 divisors (see below), whose sum is σ = 21938783016384. Its totient is φ = 6395110797312.

The previous prime is 12221212209893. The next prime is 12221212210061. The reversal of 12221212210011 is 11001221212221.

12221212210011 is a `hidden beast` number, since 12 + 221 + 212 + 210 + 0 + 11 = 666.

It is not a de Polignac number, because 12221212210011 - 2²² = 12221208015707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221212210061) 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 47 ways as a sum of consecutive naturals, for example, 154163470 + ... + 154242723.

It is an arithmetic number, because the mean of its divisors is an integer number (457057979508).

Almost surely, 2^{12221212210011} is an apocalyptic number.

12221212210011 is a deficient number, since it is larger than the sum of its proper divisors (9717570806373).

12221212210011 is a wasteful number, since it uses less digits than its factorization.

12221212210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308406260 (or 308406257 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12221212210011 its reverse (11001221212221), we get a palindrome (23222433422232).

The spelling of 12221212210011 in words is "twelve trillion, two hundred twenty-one billion, two hundred twelve million, two hundred ten thousand, eleven".