12211201022111 has 32 divisors (see below), whose sum is σ = 15420137542656. Its totient is φ = 9411020640000.

The previous prime is 12211201022057. The next prime is 12211201022149. The reversal of 12211201022111 is 11122010211221.

It is not a de Polignac number, because 12211201022111 - 2⁶ = 12211201022047 is a prime.

It is a super-2 number, since 2×12211201022111² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211201022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211201022011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239165 + ... + 4947686.

It is an arithmetic number, because the mean of its divisors is an integer number (481879298208).

Almost surely, 2^{12211201022111} is an apocalyptic number.

12211201022111 is a deficient number, since it is larger than the sum of its proper divisors (3208936520545).

12211201022111 is a wasteful number, since it uses less digits than its factorization.

12211201022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5187543.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12211201022111 its reverse (11122010211221), we get a palindrome (23333211233332).

The spelling of 12211201022111 in words is "twelve trillion, two hundred eleven billion, two hundred one million, twenty-two thousand, one hundred eleven".