111103123321 has 2 divisors, whose sum is σ = 111103123322. Its totient is φ = 111103123320.

The previous prime is 111103123319. The next prime is 111103123349. The reversal of 111103123321 is 123321301111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97321537296 + 13781586025 = 311964^2 + 117395^2 .

It is a cyclic number.

It is not a de Polignac number, because 111103123321 - 2¹ = 111103123319 is a prime.

Together with 111103123319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111103123721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55551561660 + 55551561661.

It is an arithmetic number, because the mean of its divisors is an integer number (55551561661).

Almost surely, 2^111103123321 is an apocalyptic number.

It is an amenable number.

111103123321 is a deficient number, since it is larger than the sum of its proper divisors (1).

111103123321 is an equidigital number, since it uses as much as digits as its factorization.

111103123321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111103123321 its reverse (123321301111), we get a palindrome (234424424432).

The spelling of 111103123321 in words is "one hundred eleven billion, one hundred three million, one hundred twenty-three thousand, three hundred twenty-one".