12013020012121 has 2 divisors, whose sum is σ = 12013020012122. Its totient is φ = 12013020012120.

The previous prime is 12013020011989. The next prime is 12013020012277. The reversal of 12013020012121 is 12121002031021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8726051012121 + 3286969000000 = 2953989^2 + 1813000^2 .

It is a cyclic number.

It is not a de Polignac number, because 12013020012121 - 2²³ = 12013011623513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12013020012095 and 12013020012104.

It is not a weakly prime, because it can be changed into another prime (12013020012421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006510006060 + 6006510006061.

It is an arithmetic number, because the mean of its divisors is an integer number (6006510006061).

Almost surely, 2^{12013020012121} is an apocalyptic number.

It is an amenable number.

12013020012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013020012121 is an equidigital number, since it uses as much as digits as its factorization.

12013020012121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12013020012121 its reverse (12121002031021), we get a palindrome (24134022043142).

The spelling of 12013020012121 in words is "twelve trillion, thirteen billion, twenty million, twelve thousand, one hundred twenty-one".