111200231321 has 4 divisors (see below), whose sum is σ = 111212315700. Its totient is φ = 111188146944.

The previous prime is 111200231279. The next prime is 111200231327. The reversal of 111200231321 is 123132002111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123132002111 = 2081 ⋅59169631.

It can be written as a sum of positive squares in 2 ways, for example, as 5452345600 + 105747885721 = 73840^2 + 325189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111200231321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111200231321.

It is not an unprimeable number, because it can be changed into a prime (111200231327) 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, 6028376 + ... + 6046793.

It is an arithmetic number, because the mean of its divisors is an integer number (27803078925).

Almost surely, 2^111200231321 is an apocalyptic number.

It is an amenable number.

111200231321 is a deficient number, since it is larger than the sum of its proper divisors (12084379).

111200231321 is an equidigital number, since it uses as much as digits as its factorization.

111200231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12084378.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111200231321 its reverse (123132002111), we get a palindrome (234332233432).

The spelling of 111200231321 in words is "one hundred eleven billion, two hundred million, two hundred thirty-one thousand, three hundred twenty-one".