12961141 has 2 divisors, whose sum is σ = 12961142. Its totient is φ = 12961140.

The previous prime is 12961139. The next prime is 12961147. The reversal of 12961141 is 14116921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11029041 + 1932100 = 3321^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 12961141 - 2¹ = 12961139 is a prime.

Together with 12961139, 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 (12961147) 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, 6480570 + 6480571.

It is an arithmetic number, because the mean of its divisors is an integer number (6480571).

Almost surely, 2^12961141 is an apocalyptic number.

It is an amenable number.

12961141 is a deficient number, since it is larger than the sum of its proper divisors (1).

12961141 is an equidigital number, since it uses as much as digits as its factorization.

12961141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

The square root of 12961141 is about 3600.1584687344. The cubic root of 12961141 is about 234.8989515765.

The spelling of 12961141 in words is "twelve million, nine hundred sixty-one thousand, one hundred forty-one".