12143153621 has 2 divisors, whose sum is σ = 12143153622. Its totient is φ = 12143153620.

The previous prime is 12143153579. The next prime is 12143153629. The reversal of 12143153621 is 12635134121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11318832100 + 824321521 = 106390^2 + 28711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12143153621 is a prime.

It is a super-3 number, since 3×12143153621³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12143153629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6071576810 + 6071576811.

It is an arithmetic number, because the mean of its divisors is an integer number (6071576811).

Almost surely, 2^12143153621 is an apocalyptic number.

It is an amenable number.

12143153621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12143153621 is an equidigital number, since it uses as much as digits as its factorization.

12143153621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

Adding to 12143153621 its reverse (12635134121), we get a palindrome (24778287742).

The spelling of 12143153621 in words is "twelve billion, one hundred forty-three million, one hundred fifty-three thousand, six hundred twenty-one".