12121204019 has 2 divisors, whose sum is σ = 12121204020. Its totient is φ = 12121204018.

The previous prime is 12121204009. The next prime is 12121204057. The reversal of 12121204019 is 91040212121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12121204019 - 2³² = 7826236723 is a prime.

It is a super-2 number, since 2×12121204019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12121203985 and 12121204003.

It is not a weakly prime, because it can be changed into another prime (12121204009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060602009 + 6060602010.

It is an arithmetic number, because the mean of its divisors is an integer number (6060602010).

Almost surely, 2^12121204019 is an apocalyptic number.

12121204019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121204019 is an equidigital number, since it uses as much as digits as its factorization.

12121204019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 12121204019 in words is "twelve billion, one hundred twenty-one million, two hundred four thousand, nineteen".