12021230019173 has 2 divisors, whose sum is σ = 12021230019174. Its totient is φ = 12021230019172.

The previous prime is 12021230019037. The next prime is 12021230019223. The reversal of 12021230019173 is 37191003212021.

12021230019173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11717901152164 + 303328867009 = 3423142^2 + 550753^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021230019173 - 2¹⁶ = 12021229953637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021230019973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010615009586 + 6010615009587.

It is an arithmetic number, because the mean of its divisors is an integer number (6010615009587).

Almost surely, 2^{12021230019173} is an apocalyptic number.

It is an amenable number.

12021230019173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021230019173 is an equidigital number, since it uses as much as digits as its factorization.

12021230019173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 12021230019173 in words is "twelve trillion, twenty-one billion, two hundred thirty million, nineteen thousand, one hundred seventy-three".