1229275109 has 2 divisors, whose sum is σ = 1229275110. Its totient is φ = 1229275108.

The previous prime is 1229275097. The next prime is 1229275121. The reversal of 1229275109 is 9015729221.

It is a balanced prime because it is at equal distance from previous prime (1229275097) and next prime (1229275121).

It can be written as a sum of positive squares in only one way, i.e., 1051186084 + 178089025 = 32422^2 + 13345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1229275109 - 2²⁴ = 1212497893 is a prime.

It is a super-2 number, since 2×1229275109² = 3022234587213923762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229275139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614637554 + 614637555.

It is an arithmetic number, because the mean of its divisors is an integer number (614637555).

Almost surely, 2^1229275109 is an apocalyptic number.

It is an amenable number.

1229275109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229275109 is an equidigital number, since it uses as much as digits as its factorization.

1229275109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 1229275109 is about 35061.0197940676. The cubic root of 1229275109 is about 1071.2307464496.

The spelling of 1229275109 in words is "one billion, two hundred twenty-nine million, two hundred seventy-five thousand, one hundred nine".