12144154221571 has 2 divisors, whose sum is σ = 12144154221572. Its totient is φ = 12144154221570.

The previous prime is 12144154221487. The next prime is 12144154221583. The reversal of 12144154221571 is 17512245144121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12144154221571 is a prime.

It is not a weakly prime, because it can be changed into another prime (12144154221071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072077110785 + 6072077110786.

It is an arithmetic number, because the mean of its divisors is an integer number (6072077110786).

Almost surely, 2^{12144154221571} is an apocalyptic number.

12144154221571 is a deficient number, since it is larger than the sum of its proper divisors (1).

12144154221571 is an equidigital number, since it uses as much as digits as its factorization.

12144154221571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 40.

Adding to 12144154221571 its reverse (17512245144121), we get a palindrome (29656399365692).

The spelling of 12144154221571 in words is "twelve trillion, one hundred forty-four billion, one hundred fifty-four million, two hundred twenty-one thousand, five hundred seventy-one".