1230123022109 has 2 divisors, whose sum is σ = 1230123022110. Its totient is φ = 1230123022108.

The previous prime is 1230123022081. The next prime is 1230123022123. The reversal of 1230123022109 is 9012203210321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1176509008900 + 53614013209 = 1084670^2 + 231547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230123022109 - 2¹² = 1230123018013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230123022129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615061511054 + 615061511055.

It is an arithmetic number, because the mean of its divisors is an integer number (615061511055).

Almost surely, 2^{1230123022109} is an apocalyptic number.

It is an amenable number.

1230123022109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230123022109 is an equidigital number, since it uses as much as digits as its factorization.

1230123022109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 1230123022109 in words is "one trillion, two hundred thirty billion, one hundred twenty-three million, twenty-two thousand, one hundred nine".