111920007 has 4 divisors (see below), whose sum is σ = 149226680. Its totient is φ = 74613336.

The previous prime is 111919979. The next prime is 111920021. The reversal of 111920007 is 700029111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111920007 - 2⁸ = 111919751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111920407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18653332 + ... + 18653337.

It is an arithmetic number, because the mean of its divisors is an integer number (37306670).

Almost surely, 2^111920007 is an apocalyptic number.

111920007 is a deficient number, since it is larger than the sum of its proper divisors (37306673).

111920007 is an equidigital number, since it uses as much as digits as its factorization.

111920007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37306672.

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 111920007 is about 10579.2252551876. The cubic root of 111920007 is about 481.9136668661.

Adding to 111920007 its reverse (700029111), we get a palindrome (811949118).

The spelling of 111920007 in words is "one hundred eleven million, nine hundred twenty thousand, seven".