111321201 has 4 divisors (see below), whose sum is σ = 148428272. Its totient is φ = 74214132.

The previous prime is 111321179. The next prime is 111321229. The reversal of 111321201 is 102123111.

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 not a de Polignac number, because 111321201 - 2⁶ = 111321137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111321901) 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 3 ways as a sum of consecutive naturals, for example, 18553531 + ... + 18553536.

It is an arithmetic number, because the mean of its divisors is an integer number (37107068).

Almost surely, 2^111321201 is an apocalyptic number.

It is an amenable number.

111321201 is a deficient number, since it is larger than the sum of its proper divisors (37107071).

111321201 is an equidigital number, since it uses as much as digits as its factorization.

111321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37107070.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 111321201 is about 10550.8862660916. The cubic root of 111321201 is about 481.0526680485.

Adding to 111321201 its reverse (102123111), we get a palindrome (213444312).

It can be divided in two parts, 11132120 and 1, that added together give a triangular number (11132121 = T₄₇₁₈).

The spelling of 111321201 in words is "one hundred eleven million, three hundred twenty-one thousand, two hundred one".