111111301321 has 2 divisors, whose sum is σ = 111111301322. Its totient is φ = 111111301320.

The previous prime is 111111301297. The next prime is 111111301331. The reversal of 111111301321 is 123103111111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105264558025 + 5846743296 = 324445^2 + 76464^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111301321 - 2³³ = 102521366729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111111301295 and 111111301304.

It is not a weakly prime, because it can be changed into another prime (111111301331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555650660 + 55555650661.

It is an arithmetic number, because the mean of its divisors is an integer number (55555650661).

Almost surely, 2^111111301321 is an apocalyptic number.

It is an amenable number.

111111301321 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111301321 is an equidigital number, since it uses as much as digits as its factorization.

111111301321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 111111301321 its reverse (123103111111), we get a palindrome (234214412432).

The spelling of 111111301321 in words is "one hundred eleven billion, one hundred eleven million, three hundred one thousand, three hundred twenty-one".