12000010012121 has 2 divisors, whose sum is σ = 12000010012122. Its totient is φ = 12000010012120.

The previous prime is 12000010012049. The next prime is 12000010012163. The reversal of 12000010012121 is 12121001000021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10162955067721 + 1837054944400 = 3187939^2 + 1355380^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000010012121 - 2¹⁸ = 12000009749977 is a prime.

It is not a weakly prime, because it can be changed into another prime (12000010012171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000005006060 + 6000005006061.

It is an arithmetic number, because the mean of its divisors is an integer number (6000005006061).

Almost surely, 2^{12000010012121} is an apocalyptic number.

It is an amenable number.

12000010012121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000010012121 is an equidigital number, since it uses as much as digits as its factorization.

12000010012121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12000010012121 its reverse (12121001000021), we get a palindrome (24121011012142).

The spelling of 12000010012121 in words is "twelve trillion, ten million, twelve thousand, one hundred twenty-one".