12011212220149 has 2 divisors, whose sum is σ = 12011212220150. Its totient is φ = 12011212220148.

The previous prime is 12011212220069. The next prime is 12011212220159. The reversal of 12011212220149 is 94102221211021.

12011212220149 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., 6011725341924 + 5999486878225 = 2451882^2 + 2449385^2 .

It is an emirp because it is prime and its reverse (94102221211021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12011212220149 - 2⁹ = 12011212219637 is a prime.

It is a super-4 number, since 4×12011212220149⁴ (a number of 53 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011212220159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005606110074 + 6005606110075.

It is an arithmetic number, because the mean of its divisors is an integer number (6005606110075).

Almost surely, 2^{12011212220149} is an apocalyptic number.

It is an amenable number.

12011212220149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011212220149 is an equidigital number, since it uses as much as digits as its factorization.

12011212220149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 12011212220149 in words is "twelve trillion, eleven billion, two hundred twelve million, two hundred twenty thousand, one hundred forty-nine".