111320440129 has 2 divisors, whose sum is σ = 111320440130. Its totient is φ = 111320440128.

The previous prime is 111320440087. The next prime is 111320440157. The reversal of 111320440129 is 921044023111.

It is an a-pointer prime, because the next prime (111320440157) can be obtained adding 111320440129 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110499732225 + 820707904 = 332415^2 + 28648^2 .

It is a cyclic number.

It is not a de Polignac number, because 111320440129 - 2⁷ = 111320440001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111320440097 and 111320440106.

It is not a weakly prime, because it can be changed into another prime (111320440229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55660220064 + 55660220065.

It is an arithmetic number, because the mean of its divisors is an integer number (55660220065).

Almost surely, 2^111320440129 is an apocalyptic number.

It is an amenable number.

111320440129 is a deficient number, since it is larger than the sum of its proper divisors (1).

111320440129 is an equidigital number, since it uses as much as digits as its factorization.

111320440129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 111320440129 in words is "one hundred eleven billion, three hundred twenty million, four hundred forty thousand, one hundred twenty-nine".