12222201211 has 4 divisors (see below), whose sum is σ = 13333310424. Its totient is φ = 11111092000.

The previous prime is 12222201203. The next prime is 12222201223. The reversal of 12222201211 is 11210222221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12222201211 - 2³ = 12222201203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222201281) 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, 555554590 + ... + 555554611.

It is an arithmetic number, because the mean of its divisors is an integer number (3333327606).

Almost surely, 2^12222201211 is an apocalyptic number.

12222201211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12222201211 is a deficient number, since it is larger than the sum of its proper divisors (1111109213).

12222201211 is a wasteful number, since it uses less digits than its factorization.

12222201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111109212.

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

Adding to 12222201211 its reverse (11210222221), we get a palindrome (23432423432).

The spelling of 12222201211 in words is "twelve billion, two hundred twenty-two million, two hundred one thousand, two hundred eleven".