111321907 has 6 divisors (see below), whose sum is σ = 113071148. Its totient is φ = 109575312.

The previous prime is 111321901. The next prime is 111321941. The reversal of 111321907 is 709123111.

It is a de Polignac number, because none of the positive numbers 2^k-111321907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111321901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85719 + ... + 87007.

Almost surely, 2^111321907 is an apocalyptic number.

111321907 is a deficient number, since it is larger than the sum of its proper divisors (1749241).

111321907 is an frugal number, since it uses more digits than its factorization.

111321907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 111321907 is about 10550.9197229436. The cubic root of 111321907 is about 481.0536849930.

The spelling of 111321907 in words is "one hundred eleven million, three hundred twenty-one thousand, nine hundred seven".