12001221111149 has 2 divisors, whose sum is σ = 12001221111150. Its totient is φ = 12001221111148.

The previous prime is 12001221111133. The next prime is 12001221111203. The reversal of 12001221111149 is 94111112210021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8757349955524 + 3243871155625 = 2959282^2 + 1801075^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001221111149 - 2⁴ = 12001221111133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001221111109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000610555574 + 6000610555575.

It is an arithmetic number, because the mean of its divisors is an integer number (6000610555575).

Almost surely, 2^{12001221111149} is an apocalyptic number.

It is an amenable number.

12001221111149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001221111149 is an equidigital number, since it uses as much as digits as its factorization.

12001221111149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 12001221111149 in words is "twelve trillion, one billion, two hundred twenty-one million, one hundred eleven thousand, one hundred forty-nine".