12013233001421 has 2 divisors, whose sum is σ = 12013233001422. Its totient is φ = 12013233001420.

The previous prime is 12013233001411. The next prime is 12013233001493. The reversal of 12013233001421 is 12410033231021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8594483773225 + 3418749228196 = 2931635^2 + 1848986^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013233001421 - 2¹⁰ = 12013233000397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12013233001411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006616500710 + 6006616500711.

It is an arithmetic number, because the mean of its divisors is an integer number (6006616500711).

Almost surely, 2^{12013233001421} is an apocalyptic number.

It is an amenable number.

12013233001421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013233001421 is an equidigital number, since it uses as much as digits as its factorization.

12013233001421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12013233001421 its reverse (12410033231021), we get a palindrome (24423266232442).

The spelling of 12013233001421 in words is "twelve trillion, thirteen billion, two hundred thirty-three million, one thousand, four hundred twenty-one".