111321101 has 4 divisors (see below), whose sum is σ = 111342204. Its totient is φ = 111300000.

The previous prime is 111321097. The next prime is 111321107. The reversal of 111321101 is 101123111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 65772100 + 45549001 = 8110^2 + 6749^2 .

It is a cyclic number.

It is not a de Polignac number, because 111321101 - 2² = 111321097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111321107) 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, 5201 + ... + 15801.

It is an arithmetic number, because the mean of its divisors is an integer number (27835551).

Almost surely, 2^111321101 is an apocalyptic number.

It is an amenable number.

111321101 is a deficient number, since it is larger than the sum of its proper divisors (21103).

111321101 is a wasteful number, since it uses less digits than its factorization.

111321101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21102.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 111321101 is about 10550.8815271521. The cubic root of 111321101 is about 481.0525240050.

Adding to 111321101 its reverse (101123111), we get a palindrome (212444212).

The spelling of 111321101 in words is "one hundred eleven million, three hundred twenty-one thousand, one hundred one".