12222022211 has 16 divisors (see below), whose sum is σ = 15266764800. Its totient is φ = 9541722240.

The previous prime is 12222022207. The next prime is 12222022231. The reversal of 12222022211 is 11222022221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12222022211 - 2² = 12222022207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 12222022211.

It is not an unprimeable number, because it can be changed into a prime (12222022231) 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, 1652861 + ... + 1660238.

It is an arithmetic number, because the mean of its divisors is an integer number (954172800).

Almost surely, 2^12222022211 is an apocalyptic number.

12222022211 is a deficient number, since it is larger than the sum of its proper divisors (3044742589).

12222022211 is a wasteful number, since it uses less digits than its factorization.

12222022211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313154.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12222022211 its reverse (11222022221), we get a palindrome (23444044432).

The spelling of 12222022211 in words is "twelve billion, two hundred twenty-two million, twenty-two thousand, two hundred eleven".