111012122321 has 4 divisors (see below), whose sum is σ = 111159942144. Its totient is φ = 110864302500.

The previous prime is 111012122261. The next prime is 111012122327. The reversal of 111012122321 is 123221210111.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123221210111 = 53017 ⋅2324183.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111012122321 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 111012122321.

It is not an unprimeable number, because it can be changed into a prime (111012122327) 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, 73908785 + ... + 73910286.

It is an arithmetic number, because the mean of its divisors is an integer number (27789985536).

Almost surely, 2^111012122321 is an apocalyptic number.

It is an amenable number.

111012122321 is a deficient number, since it is larger than the sum of its proper divisors (147819823).

111012122321 is an equidigital number, since it uses as much as digits as its factorization.

111012122321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147819822.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111012122321 its reverse (123221210111), we get a palindrome (234233332432).

The spelling of 111012122321 in words is "one hundred eleven billion, twelve million, one hundred twenty-two thousand, three hundred twenty-one".