111230320129 has 2 divisors, whose sum is σ = 111230320130. Its totient is φ = 111230320128.

The previous prime is 111230320109. The next prime is 111230320141. The reversal of 111230320129 is 921023032111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71956989504 + 39273330625 = 268248^2 + 198175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111230320129 is a prime.

It is not a weakly prime, because it can be changed into another prime (111230320109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55615160064 + 55615160065.

It is an arithmetic number, because the mean of its divisors is an integer number (55615160065).

Almost surely, 2^111230320129 is an apocalyptic number.

It is an amenable number.

111230320129 is a deficient number, since it is larger than the sum of its proper divisors (1).

111230320129 is an equidigital number, since it uses as much as digits as its factorization.

111230320129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 111230320129 in words is "one hundred eleven billion, two hundred thirty million, three hundred twenty thousand, one hundred twenty-nine".