12012222211 has 16 divisors (see below), whose sum is σ = 13594003200. Its totient is φ = 10514173600.

The previous prime is 12012222179. The next prime is 12012222223. The reversal of 12012222211 is 11222221021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12012222211 - 2⁵ = 12012222179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012222241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62076 + ... + 166966.

It is an arithmetic number, because the mean of its divisors is an integer number (849625200).

Almost surely, 2^12012222211 is an apocalyptic number.

12012222211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12012222211 is a deficient number, since it is larger than the sum of its proper divisors (1581780989).

12012222211 is a wasteful number, since it uses less digits than its factorization.

12012222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105290.

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

Adding to 12012222211 its reverse (11222221021), we get a palindrome (23234443232).

The spelling of 12012222211 in words is "twelve billion, twelve million, two hundred twenty-two thousand, two hundred eleven".