12212122222211 has 8 divisors (see below), whose sum is σ = 12496259117760. Its totient is φ = 11927991420072.

The previous prime is 12212122222129. The next prime is 12212122222231. The reversal of 12212122222211 is 11222222121221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12212122222211 - 2²⁶ = 12212055113347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212122222231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2663936 + ... + 5614338.

It is an arithmetic number, because the mean of its divisors is an integer number (1562032389720).

Almost surely, 2^{12212122222211} is an apocalyptic number.

12212122222211 is a deficient number, since it is larger than the sum of its proper divisors (284136895549).

12212122222211 is an equidigital number, since it uses as much as digits as its factorization.

12212122222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046705.

The product of its digits is 512, while the sum is 23.

Adding to 12212122222211 its reverse (11222222121221), we get a palindrome (23434344343432).

The spelling of 12212122222211 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred eleven".