1807007182121 has 2 divisors, whose sum is σ = 1807007182122. Its totient is φ = 1807007182120.

The previous prime is 1807007182103. The next prime is 1807007182129. The reversal of 1807007182121 is 1212817007081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1797208360000 + 9798822121 = 1340600^2 + 98989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1807007182121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1807007182129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903503591060 + 903503591061.

It is an arithmetic number, because the mean of its divisors is an integer number (903503591061).

Almost surely, 2^{1807007182121} is an apocalyptic number.

It is an amenable number.

1807007182121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1807007182121 is an equidigital number, since it uses as much as digits as its factorization.

1807007182121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 38.

The spelling of 1807007182121 in words is "one trillion, eight hundred seven billion, seven million, one hundred eighty-two thousand, one hundred twenty-one".