12177004354721 has 2 divisors, whose sum is σ = 12177004354722. Its totient is φ = 12177004354720.

The previous prime is 12177004354699. The next prime is 12177004354769. The reversal of 12177004354721 is 12745340077121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10242432144400 + 1934572210321 = 3200380^2 + 1390889^2 .

It is a cyclic number.

It is not a de Polignac number, because 12177004354721 - 2⁶ = 12177004354657 is a prime.

It is not a weakly prime, because it can be changed into another prime (12177004354621) 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, 6088502177360 + 6088502177361.

It is an arithmetic number, because the mean of its divisors is an integer number (6088502177361).

Almost surely, 2^{12177004354721} is an apocalyptic number.

It is an amenable number.

12177004354721 is a deficient number, since it is larger than the sum of its proper divisors (1).

12177004354721 is an equidigital number, since it uses as much as digits as its factorization.

12177004354721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 12177004354721 in words is "twelve trillion, one hundred seventy-seven billion, four million, three hundred fifty-four thousand, seven hundred twenty-one".