12084153721 has 2 divisors, whose sum is σ = 12084153722. Its totient is φ = 12084153720.

The previous prime is 12084153703. The next prime is 12084153727. The reversal of 12084153721 is 12735148021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9616548096 + 2467605625 = 98064^2 + 49675^2 .

It is an emirp because it is prime and its reverse (12735148021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12084153721 - 2⁵ = 12084153689 is a prime.

It is not a weakly prime, because it can be changed into another prime (12084153727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6042076860 + 6042076861.

It is an arithmetic number, because the mean of its divisors is an integer number (6042076861).

Almost surely, 2^12084153721 is an apocalyptic number.

It is an amenable number.

12084153721 is a deficient number, since it is larger than the sum of its proper divisors (1).

12084153721 is an equidigital number, since it uses as much as digits as its factorization.

12084153721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 12084153721 in words is "twelve billion, eighty-four million, one hundred fifty-three thousand, seven hundred twenty-one".