12222220011 has 4 divisors (see below), whose sum is σ = 16296293352. Its totient is φ = 8148146672.

The previous prime is 12222219967. The next prime is 12222220013. The reversal of 12222220011 is 11002222221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11002222221 = 3 ⋅3667407407.

It is a cyclic number.

It is not a de Polignac number, because 12222220011 - 2²⁹ = 11685349099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12222220013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037036666 + ... + 2037036671.

It is an arithmetic number, because the mean of its divisors is an integer number (4074073338).

Almost surely, 2^12222220011 is an apocalyptic number.

12222220011 is a deficient number, since it is larger than the sum of its proper divisors (4074073341).

12222220011 is an equidigital number, since it uses as much as digits as its factorization.

12222220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074073340.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12222220011 its reverse (11002222221), we get a palindrome (23224442232).

The spelling of 12222220011 in words is "twelve billion, two hundred twenty-two million, two hundred twenty thousand, eleven".