111215325145 has 4 divisors (see below), whose sum is σ = 133458390180. Its totient is φ = 88972260112.

The previous prime is 111215325103. The next prime is 111215325157. The reversal of 111215325145 is 541523512111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 74732797129 + 36482528016 = 273373^2 + 191004^2 .

It is a cyclic number.

It is not a de Polignac number, because 111215325145 - 2²³ = 111206936537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11121532510 + ... + 11121532519.

It is an arithmetic number, because the mean of its divisors is an integer number (33364597545).

Almost surely, 2^111215325145 is an apocalyptic number.

It is an amenable number.

111215325145 is a deficient number, since it is larger than the sum of its proper divisors (22243065035).

111215325145 is an equidigital number, since it uses as much as digits as its factorization.

111215325145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22243065034.

The product of its digits is 6000, while the sum is 31.

Adding to 111215325145 its reverse (541523512111), we get a palindrome (652738837256).

The spelling of 111215325145 in words is "one hundred eleven billion, two hundred fifteen million, three hundred twenty-five thousand, one hundred forty-five".