1111121149 has 2 divisors, whose sum is σ = 1111121150. Its totient is φ = 1111121148.

The previous prime is 1111121119. The next prime is 1111121153. The reversal of 1111121149 is 9411211111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1013467225 + 97653924 = 31835^2 + 9882^2 .

It is an emirp because it is prime and its reverse (9411211111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111121149 - 2⁵ = 1111121117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111121119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555560574 + 555560575.

It is an arithmetic number, because the mean of its divisors is an integer number (555560575).

Almost surely, 2^1111121149 is an apocalyptic number.

It is an amenable number.

1111121149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111121149 is an equidigital number, since it uses as much as digits as its factorization.

1111121149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 22.

The square root of 1111121149 is about 33333.4839013266. The cubic root of 1111121149 is about 1035.7472876474.

The spelling of 1111121149 in words is "one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred forty-nine".