111215345 has 8 divisors (see below), whose sum is σ = 133793640. Its totient is φ = 88748800.

The previous prime is 111215333. The next prime is 111215347. The reversal of 111215345 is 543512111.

It can be written as a sum of positive squares in 4 ways, for example, as 9265936 + 101949409 = 3044^2 + 10097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111215345 - 2⁸ = 111215089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111215345.

It is not an unprimeable number, because it can be changed into a prime (111215347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25730 + ... + 29739.

It is an arithmetic number, because the mean of its divisors is an integer number (16724205).

Almost surely, 2^111215345 is an apocalyptic number.

It is an amenable number.

111215345 is a deficient number, since it is larger than the sum of its proper divisors (22578295).

111215345 is an equidigital number, since it uses as much as digits as its factorization.

111215345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55875.

The product of its digits is 600, while the sum is 23.

The square root of 111215345 is about 10545.8686223563. The cubic root of 111215345 is about 480.9001410662.

Adding to 111215345 its reverse (543512111), we get a palindrome (654727456).

The spelling of 111215345 in words is "one hundred eleven million, two hundred fifteen thousand, three hundred forty-five".