111101132321 has 4 divisors (see below), whose sum is σ = 111743335572. Its totient is φ = 110458929072.

The previous prime is 111101132279. The next prime is 111101132333. The reversal of 111101132321 is 123231101111.

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 69305827600 + 41795304721 = 263260^2 + 204439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111101132321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111101132321.

It is not an unprimeable number, because it can be changed into a prime (111101132381) 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, 321101366 + ... + 321101711.

It is an arithmetic number, because the mean of its divisors is an integer number (27935833893).

Almost surely, 2^111101132321 is an apocalyptic number.

It is an amenable number.

111101132321 is a deficient number, since it is larger than the sum of its proper divisors (642203251).

111101132321 is an equidigital number, since it uses as much as digits as its factorization.

111101132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642203250.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111101132321 its reverse (123231101111), we get a palindrome (234332233432).

The spelling of 111101132321 in words is "one hundred eleven billion, one hundred one million, one hundred thirty-two thousand, three hundred twenty-one".