12221181067141 has 4 divisors (see below), whose sum is σ = 12221838739552. Its totient is φ = 12220523394732.

The previous prime is 12221181067093. The next prime is 12221181067153. The reversal of 12221181067141 is 14176018112221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12221181067141 - 2⁹ = 12221181066629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12221181067141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221181067181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328808331 + ... + 328845496.

It is an arithmetic number, because the mean of its divisors is an integer number (3055459684888).

Almost surely, 2^{12221181067141} is an apocalyptic number.

It is an amenable number.

12221181067141 is a deficient number, since it is larger than the sum of its proper divisors (657672411).

12221181067141 is an equidigital number, since it uses as much as digits as its factorization.

12221181067141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657672410.

The product of its (nonzero) digits is 10752, while the sum is 37.

Adding to 12221181067141 its reverse (14176018112221), we get a palindrome (26397199179362).

The spelling of 12221181067141 in words is "twelve trillion, two hundred twenty-one billion, one hundred eighty-one million, sixty-seven thousand, one hundred forty-one".