1230123022129 has 2 divisors, whose sum is σ = 1230123022130. Its totient is φ = 1230123022128.

The previous prime is 1230123022123. The next prime is 1230123022133. The reversal of 1230123022129 is 9212203210321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1083633114529 + 146489907600 = 1040977^2 + 382740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230123022129 - 2⁷ = 1230123022001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230123022097 and 1230123022106.

It is not a weakly prime, because it can be changed into another prime (1230123022123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615061511064 + 615061511065.

It is an arithmetic number, because the mean of its divisors is an integer number (615061511065).

Almost surely, 2^{1230123022129} is an apocalyptic number.

It is an amenable number.

1230123022129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230123022129 is an equidigital number, since it uses as much as digits as its factorization.

1230123022129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 1230123022129 in words is "one trillion, two hundred thirty billion, one hundred twenty-three million, twenty-two thousand, one hundred twenty-nine".