111121007 has 2 divisors, whose sum is σ = 111121008. Its totient is φ = 111121006.

The previous prime is 111120983. The next prime is 111121037. The reversal of 111121007 is 700121111.

It is a weak prime.

It is an emirp because it is prime and its reverse (700121111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111121007 - 2²⁴ = 94343791 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111120982 and 111121000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111121037) 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, 55560503 + 55560504.

It is an arithmetic number, because the mean of its divisors is an integer number (55560504).

Almost surely, 2^111121007 is an apocalyptic number.

111121007 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121007 is an equidigital number, since it uses as much as digits as its factorization.

111121007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 14.

The square root of 111121007 is about 10541.3949266689. The cubic root of 111121007 is about 480.7641286869.

Adding to 111121007 its reverse (700121111), we get a palindrome (811242118).

The spelling of 111121007 in words is "one hundred eleven million, one hundred twenty-one thousand, seven".