111303221121 has 24 divisors (see below), whose sum is σ = 168255447360. Its totient is φ = 73521376272.

The previous prime is 111303221119. The next prime is 111303221123. The reversal of 111303221121 is 121122303111.

It is an interprime number because it is at equal distance from previous prime (111303221119) and next prime (111303221123).

It is not a de Polignac number, because 111303221121 - 2¹ = 111303221119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111303221094 and 111303221103.

It is not an unprimeable number, because it can be changed into a prime (111303221123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2074605 + ... + 2127578.

It is an arithmetic number, because the mean of its divisors is an integer number (7010643640).

Almost surely, 2^111303221121 is an apocalyptic number.

It is an amenable number.

111303221121 is a deficient number, since it is larger than the sum of its proper divisors (56952226239).

111303221121 is an equidigital number, since it uses as much as digits as its factorization.

111303221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202307 (or 4202295 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111303221121 its reverse (121122303111), we get a palindrome (232425524232).

The spelling of 111303221121 in words is "one hundred eleven billion, three hundred three million, two hundred twenty-one thousand, one hundred twenty-one".