12211000011997 has 2 divisors, whose sum is σ = 12211000011998. Its totient is φ = 12211000011996.

The previous prime is 12211000011949. The next prime is 12211000012007. The reversal of 12211000011997 is 79911000011221.

12211000011997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9739960633881 + 2471039378116 = 3120891^2 + 1571954^2 .

It is a cyclic number.

It is not a de Polignac number, because 12211000011997 - 2²⁷ = 12210865794269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12211000011937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105500005998 + 6105500005999.

It is an arithmetic number, because the mean of its divisors is an integer number (6105500005999).

Almost surely, 2^{12211000011997} is an apocalyptic number.

It is an amenable number.

12211000011997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211000011997 is an equidigital number, since it uses as much as digits as its factorization.

12211000011997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 34.

The spelling of 12211000011997 in words is "twelve trillion, two hundred eleven billion, eleven thousand, nine hundred ninety-seven".