12221001211187 has 2 divisors, whose sum is σ = 12221001211188. Its totient is φ = 12221001211186.

The previous prime is 12221001211127. The next prime is 12221001211231. The reversal of 12221001211187 is 78111210012221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12221001211187 - 2²⁴ = 12220984433971 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221001211127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110500605593 + 6110500605594.

It is an arithmetic number, because the mean of its divisors is an integer number (6110500605594).

Almost surely, 2^{12221001211187} is an apocalyptic number.

12221001211187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221001211187 is an equidigital number, since it uses as much as digits as its factorization.

12221001211187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 29.

The spelling of 12221001211187 in words is "twelve trillion, two hundred twenty-one billion, one million, two hundred eleven thousand, one hundred eighty-seven".