111543201 has 48 divisors (see below), whose sum is σ = 203793408. Its totient is φ = 57103200.

The previous prime is 111543199. The next prime is 111543203. The reversal of 111543201 is 102345111.

It is an interprime number because it is at equal distance from previous prime (111543199) and next prime (111543203).

It is not a de Polignac number, because 111543201 - 2¹ = 111543199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111543203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48070 + ... + 50336.

It is an arithmetic number, because the mean of its divisors is an integer number (4245696).

Almost surely, 2^111543201 is an apocalyptic number.

111543201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111543201 is a deficient number, since it is larger than the sum of its proper divisors (92250207).

111543201 is a wasteful number, since it uses less digits than its factorization.

111543201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2359 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 111543201 is about 10561.4014695020. The cubic root of 111543201 is about 481.3722321552.

Adding to 111543201 its reverse (102345111), we get a palindrome (213888312).

The spelling of 111543201 in words is "one hundred eleven million, five hundred forty-three thousand, two hundred one".