12212222211211 has 12 divisors (see below), whose sum is σ = 13423728600856. Its totient is φ = 11101708458720.

The previous prime is 12212222211197. The next prime is 12212222211239. The reversal of 12212222211211 is 11211222221221.

It is not a de Polignac number, because 12212222211211 - 2¹⁷ = 12212222080139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212222211811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2965900 + ... + 5763766.

Almost surely, 2^{12212222211211} is an apocalyptic number.

12212222211211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12212222211211 is a deficient number, since it is larger than the sum of its proper divisors (1211506389645).

12212222211211 is a wasteful number, since it uses less digits than its factorization.

12212222211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833962 (or 2833951 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 12212222211211 its reverse (11211222221221), we get a palindrome (23423444432432).

The spelling of 12212222211211 in words is "twelve trillion, two hundred twelve billion, two hundred twenty-two million, two hundred eleven thousand, two hundred eleven".