111221330115 has 64 divisors (see below), whose sum is σ = 217954400256. Its totient is φ = 47318971392.

The previous prime is 111221330083. The next prime is 111221330153. The reversal of 111221330115 is 511033122111.

It is not a de Polignac number, because 111221330115 - 2⁵ = 111221330083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 111221330091 and 111221330100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 533002 + ... + 711711.

It is an arithmetic number, because the mean of its divisors is an integer number (3405537504).

Almost surely, 2^111221330115 is an apocalyptic number.

111221330115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

111221330115 is a deficient number, since it is larger than the sum of its proper divisors (106733070141).

111221330115 is a wasteful number, since it uses less digits than its factorization.

111221330115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244788.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 111221330115 its reverse (511033122111), we get a palindrome (622254452226).

The spelling of 111221330115 in words is "one hundred eleven billion, two hundred twenty-one million, three hundred thirty thousand, one hundred fifteen".