111542201 has 4 divisors (see below), whose sum is σ = 111600000. Its totient is φ = 111484404.

The previous prime is 111542191. The next prime is 111542209. The reversal of 111542201 is 102245111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111542201 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 111542201.

It is not an unprimeable number, because it can be changed into a prime (111542209) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 25901 + ... + 29898.

It is an arithmetic number, because the mean of its divisors is an integer number (27900000).

Almost surely, 2^111542201 is an apocalyptic number.

It is an amenable number.

111542201 is a deficient number, since it is larger than the sum of its proper divisors (57799).

111542201 is an equidigital number, since it uses as much as digits as its factorization.

111542201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57798.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 111542201 is about 10561.3541271941. The cubic root of 111542201 is about 481.3707936284.

Adding to 111542201 its reverse (102245111), we get a palindrome (213787312).

The spelling of 111542201 in words is "one hundred eleven million, five hundred forty-two thousand, two hundred one".