182721610121 has 2 divisors, whose sum is σ = 182721610122. Its totient is φ = 182721610120.

The previous prime is 182721610109. The next prime is 182721610171. The reversal of 182721610121 is 121016127281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172088906896 + 10632703225 = 414836^2 + 103115^2 .

It is a cyclic number.

It is not a de Polignac number, because 182721610121 - 2¹⁰ = 182721609097 is a prime.

It is not a weakly prime, because it can be changed into another prime (182721610171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91360805060 + 91360805061.

It is an arithmetic number, because the mean of its divisors is an integer number (91360805061).

Almost surely, 2^182721610121 is an apocalyptic number.

It is an amenable number.

182721610121 is a deficient number, since it is larger than the sum of its proper divisors (1).

182721610121 is an equidigital number, since it uses as much as digits as its factorization.

182721610121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 32.

The spelling of 182721610121 in words is "one hundred eighty-two billion, seven hundred twenty-one million, six hundred ten thousand, one hundred twenty-one".