111352121 has 4 divisors (see below), whose sum is σ = 112337652. Its totient is φ = 110366592.

The previous prime is 111352117. The next prime is 111352123. The reversal of 111352121 is 121253111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121253111 = 7 ⋅17321873.

It can be written as a sum of positive squares in 2 ways, for example, as 48372025 + 62980096 = 6955^2 + 7936^2 .

It is a cyclic number.

It is not a de Polignac number, because 111352121 - 2² = 111352117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111352121.

It is not an unprimeable number, because it can be changed into a prime (111352123) 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 3 ways as a sum of consecutive naturals, for example, 492596 + ... + 492821.

It is an arithmetic number, because the mean of its divisors is an integer number (28084413).

Almost surely, 2^111352121 is an apocalyptic number.

It is an amenable number.

111352121 is a deficient number, since it is larger than the sum of its proper divisors (985531).

111352121 is an equidigital number, since it uses as much as digits as its factorization.

111352121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985530.

The product of its digits is 60, while the sum is 17.

The square root of 111352121 is about 10552.3514441095. The cubic root of 111352121 is about 481.0972021577.

The spelling of 111352121 in words is "one hundred eleven million, three hundred fifty-two thousand, one hundred twenty-one".