1111122120149 has 2 divisors, whose sum is σ = 1111122120150. Its totient is φ = 1111122120148.

The previous prime is 1111122120011. The next prime is 1111122120167. The reversal of 1111122120149 is 9410212211111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 741071331025 + 370050789124 = 860855^2 + 608318^2 .

It is an emirp because it is prime and its reverse (9410212211111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111122120149 - 2²⁰ = 1111121071573 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111122120169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555561060074 + 555561060075.

It is an arithmetic number, because the mean of its divisors is an integer number (555561060075).

Almost surely, 2^{1111122120149} is an apocalyptic number.

It is an amenable number.

1111122120149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111122120149 is an equidigital number, since it uses as much as digits as its factorization.

1111122120149 is an evil number, because the sum of its binary digits is even.

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

The spelling of 1111122120149 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, one hundred twenty thousand, one hundred forty-nine".