10666236774121 has 2 divisors, whose sum is σ = 10666236774122. Its totient is φ = 10666236774120.

The previous prime is 10666236774049. The next prime is 10666236774191. The reversal of 10666236774121 is 12147763266601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7351342904896 + 3314893869225 = 2711336^2 + 1820685^2 .

It is a cyclic number.

It is not a de Polignac number, because 10666236774121 - 2¹⁵ = 10666236741353 is a prime.

It is a super-2 number, since 2×10666236774121² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10666236774191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333118387060 + 5333118387061.

It is an arithmetic number, because the mean of its divisors is an integer number (5333118387061).

Almost surely, 2^{10666236774121} is an apocalyptic number.

It is an amenable number.

10666236774121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10666236774121 is an equidigital number, since it uses as much as digits as its factorization.

10666236774121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 10666236774121 in words is "ten trillion, six hundred sixty-six billion, two hundred thirty-six million, seven hundred seventy-four thousand, one hundred twenty-one".