111401 has 4 divisors (see below), whose sum is σ = 117972. Its totient is φ = 104832.

The previous prime is 111373. The next prime is 111409. The reversal of 111401 is 104111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63001 + 48400 = 251^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 111401 - 2⁶ = 111337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3260 + ... + 3293.

It is an arithmetic number, because the mean of its divisors is an integer number (29493).

2¹¹¹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

111401 is a deficient number, since it is larger than the sum of its proper divisors (6571).

111401 is an equidigital number, since it uses as much as digits as its factorization.

111401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 111401 is about 333.7678834160. The cubic root of 111401 is about 48.1167585820.

Adding to 111401 its reverse (104111), we get a palindrome (215512).

It can be divided in two parts, 111 and 401, that added together give a 9-th power (512 = 2⁹).

The spelling of 111401 in words is "one hundred eleven thousand, four hundred one", and thus it is an iban number.