1200123102077 has 2 divisors, whose sum is σ = 1200123102078. Its totient is φ = 1200123102076.

The previous prime is 1200123102041. The next prime is 1200123102121. The reversal of 1200123102077 is 7702013210021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900893315716 + 299229786361 = 949154^2 + 547019^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200123102077 - 2¹⁰ = 1200123101053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200123102007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600061551038 + 600061551039.

It is an arithmetic number, because the mean of its divisors is an integer number (600061551039).

Almost surely, 2^{1200123102077} is an apocalyptic number.

It is an amenable number.

1200123102077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200123102077 is an equidigital number, since it uses as much as digits as its factorization.

1200123102077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

Adding to 1200123102077 its reverse (7702013210021), we get a palindrome (8902136312098).

The spelling of 1200123102077 in words is "one trillion, two hundred billion, one hundred twenty-three million, one hundred two thousand, seventy-seven".