12001211208997 has 2 divisors, whose sum is σ = 12001211208998. Its totient is φ = 12001211208996.

The previous prime is 12001211208991. The next prime is 12001211209007. The reversal of 12001211208997 is 79980211210021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11512713655521 + 488497553476 = 3393039^2 + 698926^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001211208997 - 2³ = 12001211208989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001211208991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000605604498 + 6000605604499.

It is an arithmetic number, because the mean of its divisors is an integer number (6000605604499).

Almost surely, 2^{12001211208997} is an apocalyptic number.

It is an amenable number.

12001211208997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001211208997 is an equidigital number, since it uses as much as digits as its factorization.

12001211208997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 12001211208997 in words is "twelve trillion, one billion, two hundred eleven million, two hundred eight thousand, nine hundred ninety-seven".