111121311149 has 2 divisors, whose sum is σ = 111121311150. Its totient is φ = 111121311148.

The previous prime is 111121311139. The next prime is 111121311151. The reversal of 111121311149 is 941113121111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63092397124 + 48028914025 = 251182^2 + 219155^2 .

It is a cyclic number.

It is not a de Polignac number, because 111121311149 - 2²⁰ = 111120262573 is a prime.

Together with 111121311151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111121311139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560655574 + 55560655575.

It is an arithmetic number, because the mean of its divisors is an integer number (55560655575).

Almost surely, 2^111121311149 is an apocalyptic number.

It is an amenable number.

111121311149 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121311149 is an equidigital number, since it uses as much as digits as its factorization.

111121311149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 26.

The spelling of 111121311149 in words is "one hundred eleven billion, one hundred twenty-one million, three hundred eleven thousand, one hundred forty-nine".