12001221120019 has 2 divisors, whose sum is σ = 12001221120020. Its totient is φ = 12001221120018.

The previous prime is 12001221120001. The next prime is 12001221120113. The reversal of 12001221120019 is 91002112210021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12001221120019 - 2¹⁷ = 12001220988947 is a prime.

It is a super-2 number, since 2×12001221120019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12001221127019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000610560009 + 6000610560010.

It is an arithmetic number, because the mean of its divisors is an integer number (6000610560010).

Almost surely, 2^{12001221120019} is an apocalyptic number.

12001221120019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001221120019 is an equidigital number, since it uses as much as digits as its factorization.

12001221120019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 12001221120019 in words is "twelve trillion, one billion, two hundred twenty-one million, one hundred twenty thousand, nineteen".