1012125455321 has 2 divisors, whose sum is σ = 1012125455322. Its totient is φ = 1012125455320.

The previous prime is 1012125455287. The next prime is 1012125455357. The reversal of 1012125455321 is 1235545212101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 512926683721 + 499198771600 = 716189^2 + 706540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012125455321 - 2¹⁰ = 1012125454297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012125455521) 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, 506062727660 + 506062727661.

It is an arithmetic number, because the mean of its divisors is an integer number (506062727661).

Almost surely, 2^{1012125455321} is an apocalyptic number.

It is an amenable number.

1012125455321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012125455321 is an equidigital number, since it uses as much as digits as its factorization.

1012125455321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 1012125455321 in words is "one trillion, twelve billion, one hundred twenty-five million, four hundred fifty-five thousand, three hundred twenty-one".