12001233302521 has 2 divisors, whose sum is σ = 12001233302522. Its totient is φ = 12001233302520.

The previous prime is 12001233302491. The next prime is 12001233302543. The reversal of 12001233302521 is 12520333210021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6074253160000 + 5926980142521 = 2464600^2 + 2434539^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001233302521 - 2³⁷ = 11863794349049 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001233302561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000616651260 + 6000616651261.

It is an arithmetic number, because the mean of its divisors is an integer number (6000616651261).

Almost surely, 2^{12001233302521} is an apocalyptic number.

It is an amenable number.

12001233302521 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001233302521 is an equidigital number, since it uses as much as digits as its factorization.

12001233302521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 12001233302521 its reverse (12520333210021), we get a palindrome (24521566512542).

The spelling of 12001233302521 in words is "twelve trillion, one billion, two hundred thirty-three million, three hundred two thousand, five hundred twenty-one".