10066662121 has 2 divisors, whose sum is σ = 10066662122. Its totient is φ = 10066662120.

The previous prime is 10066662077. The next prime is 10066662127. The reversal of 10066662121 is 12126666001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9932912896 + 133749225 = 99664^2 + 11565^2 .

It is a cyclic number.

It is not a de Polignac number, because 10066662121 - 2²⁹ = 9529791209 is a prime.

It is not a weakly prime, because it can be changed into another prime (10066662127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5033331060 + 5033331061.

It is an arithmetic number, because the mean of its divisors is an integer number (5033331061).

Almost surely, 2^10066662121 is an apocalyptic number.

It is an amenable number.

10066662121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10066662121 is an equidigital number, since it uses as much as digits as its factorization.

10066662121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 10066662121 in words is "ten billion, sixty-six million, six hundred sixty-two thousand, one hundred twenty-one".