12211002111 has 64 divisors (see below), whose sum is σ = 20600487936. Its totient is φ = 6249744000.

The previous prime is 12211002109. The next prime is 12211002149. The reversal of 12211002111 is 11120011221.

It is not a de Polignac number, because 12211002111 - 2¹ = 12211002109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211802111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5201640 + ... + 5203986.

It is an arithmetic number, because the mean of its divisors is an integer number (321882624).

Almost surely, 2^12211002111 is an apocalyptic number.

12211002111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12211002111 is a deficient number, since it is larger than the sum of its proper divisors (8389485825).

12211002111 is a wasteful number, since it uses less digits than its factorization.

12211002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12211002111 its reverse (11120011221), we get a palindrome (23331013332).

The spelling of 12211002111 in words is "twelve billion, two hundred eleven million, two thousand, one hundred eleven".