111303221123 has 2 divisors, whose sum is σ = 111303221124. Its totient is φ = 111303221122.

The previous prime is 111303221119. The next prime is 111303221153. The reversal of 111303221123 is 321122303111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111303221123 - 2² = 111303221119 is a prime.

It is a super-2 number, since 2×111303221123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111303221095 and 111303221104.

It is not a weakly prime, because it can be changed into another prime (111303221153) 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 as a sum of consecutive naturals, namely, 55651610561 + 55651610562.

It is an arithmetic number, because the mean of its divisors is an integer number (55651610562).

Almost surely, 2^111303221123 is an apocalyptic number.

111303221123 is a deficient number, since it is larger than the sum of its proper divisors (1).

111303221123 is an equidigital number, since it uses as much as digits as its factorization.

111303221123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 111303221123 its reverse (321122303111), we get a palindrome (432425524234).

The spelling of 111303221123 in words is "one hundred eleven billion, three hundred three million, two hundred twenty-one thousand, one hundred twenty-three".