12211141 has 2 divisors, whose sum is σ = 12211142. Its totient is φ = 12211140.

The previous prime is 12211139. The next prime is 12211159. The reversal of 12211141 is 14111221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6522916 + 5688225 = 2554^2 + 2385^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211141 - 2¹ = 12211139 is a prime.

It is a super-2 number, since 2×12211141² = 298223929043762, which contains 22 as substring.

Together with 12211139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105570 + 6105571.

It is an arithmetic number, because the mean of its divisors is an integer number (6105571).

Almost surely, 2^12211141 is an apocalyptic number.

It is an amenable number.

12211141 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211141 is an equidigital number, since it uses as much as digits as its factorization.

12211141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16, while the sum is 13.

The square root of 12211141 is about 3494.4443048931. Note that the first 3 decimals coincide. The cubic root of 12211141 is about 230.2778054644.

Adding to 12211141 its reverse (14111221), we get a palindrome (26322362).

The spelling of 12211141 in words is "twelve million, two hundred eleven thousand, one hundred forty-one".