118228129 has 2 divisors, whose sum is σ = 118228130. Its totient is φ = 118228128.

The previous prime is 118228111. The next prime is 118228147. The reversal of 118228129 is 921822811.

It is a balanced prime because it is at equal distance from previous prime (118228111) and next prime (118228147).

It can be written as a sum of positive squares in only one way, i.e., 107019025 + 11209104 = 10345^2 + 3348^2 .

It is a cyclic number.

It is not a de Polignac number, because 118228129 - 2²¹ = 116130977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 118228094 and 118228103.

It is not a weakly prime, because it can be changed into another prime (118228169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59114064 + 59114065.

It is an arithmetic number, because the mean of its divisors is an integer number (59114065).

Almost surely, 2^118228129 is an apocalyptic number.

It is an amenable number.

118228129 is a deficient number, since it is larger than the sum of its proper divisors (1).

118228129 is an equidigital number, since it uses as much as digits as its factorization.

118228129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 34.

The square root of 118228129 is about 10873.2759093109. The cubic root of 118228129 is about 490.8026951730.

The spelling of 118228129 in words is "one hundred eighteen million, two hundred twenty-eight thousand, one hundred twenty-nine".