111121343 has 2 divisors, whose sum is σ = 111121344. Its totient is φ = 111121342.

The previous prime is 111121327. The next prime is 111121363. The reversal of 111121343 is 343121111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111121343 - 2⁴ = 111121327 is a prime.

It is a super-3 number, since 3×111121343³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111121363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560671 + 55560672.

It is an arithmetic number, because the mean of its divisors is an integer number (55560672).

Almost surely, 2^111121343 is an apocalyptic number.

111121343 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121343 is an equidigital number, since it uses as much as digits as its factorization.

111121343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 111121343 is about 10541.4108638265. The cubic root of 111121343 is about 480.7646132535.

Adding to 111121343 its reverse (343121111), we get a palindrome (454242454).

The spelling of 111121343 in words is "one hundred eleven million, one hundred twenty-one thousand, three hundred forty-three".