111123222149 has 2 divisors, whose sum is σ = 111123222150. Its totient is φ = 111123222148.

The previous prime is 111123222059. The next prime is 111123222169. The reversal of 111123222149 is 941222321111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107643048100 + 3480174049 = 328090^2 + 58993^2 .

It is a cyclic number.

It is not a de Polignac number, because 111123222149 - 2⁸ = 111123221893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111123222169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561611074 + 55561611075.

It is an arithmetic number, because the mean of its divisors is an integer number (55561611075).

Almost surely, 2^111123222149 is an apocalyptic number.

It is an amenable number.

111123222149 is a deficient number, since it is larger than the sum of its proper divisors (1).

111123222149 is an equidigital number, since it uses as much as digits as its factorization.

111123222149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The spelling of 111123222149 in words is "one hundred eleven billion, one hundred twenty-three million, two hundred twenty-two thousand, one hundred forty-nine".