12011122212211 has 8 divisors (see below), whose sum is σ = 12078564192720. Its totient is φ = 11943684018048.

The previous prime is 12011122212197. The next prime is 12011122212247. The reversal of 12011122212211 is 11221222111021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12011122212211 - 2¹⁷ = 12011122081139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011122212311) 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, 5540095 + ... + 7396951.

It is an arithmetic number, because the mean of its divisors is an integer number (1509820524090).

Almost surely, 2^{12011122212211} is an apocalyptic number.

12011122212211 is a deficient number, since it is larger than the sum of its proper divisors (67441980509).

12011122212211 is a wasteful number, since it uses less digits than its factorization.

12011122212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893173.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12011122212211 its reverse (11221222111021), we get a palindrome (23232344323232).

The spelling of 12011122212211 in words is "twelve trillion, eleven billion, one hundred twenty-two million, two hundred twelve thousand, two hundred eleven".