12179122661 has 2 divisors, whose sum is σ = 12179122662. Its totient is φ = 12179122660.

The previous prime is 12179122621. The next prime is 12179122667. The reversal of 12179122661 is 16622197121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10858890436 + 1320232225 = 104206^2 + 36335^2 .

It is a cyclic number.

It is not a de Polignac number, because 12179122661 - 2¹⁸ = 12178860517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12179122667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6089561330 + 6089561331.

It is an arithmetic number, because the mean of its divisors is an integer number (6089561331).

Almost surely, 2^12179122661 is an apocalyptic number.

It is an amenable number.

12179122661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12179122661 is an equidigital number, since it uses as much as digits as its factorization.

12179122661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The spelling of 12179122661 in words is "twelve billion, one hundred seventy-nine million, one hundred twenty-two thousand, six hundred sixty-one".