12021021019967 has 2 divisors, whose sum is σ = 12021021019968. Its totient is φ = 12021021019966.

The previous prime is 12021021019961. The next prime is 12021021020011. The reversal of 12021021019967 is 76991012012021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12021021019967 - 2²² = 12021016825663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021021019961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010510509983 + 6010510509984.

It is an arithmetic number, because the mean of its divisors is an integer number (6010510509984).

Almost surely, 2^{12021021019967} is an apocalyptic number.

12021021019967 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021021019967 is an equidigital number, since it uses as much as digits as its factorization.

12021021019967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 41.

The spelling of 12021021019967 in words is "twelve trillion, twenty-one billion, twenty-one million, nineteen thousand, nine hundred sixty-seven".