11666601220327 has 2 divisors, whose sum is σ = 11666601220328. Its totient is φ = 11666601220326.

The previous prime is 11666601220321. The next prime is 11666601220333. The reversal of 11666601220327 is 72302210666611.

It is a balanced prime because it is at equal distance from previous prime (11666601220321) and next prime (11666601220333).

It is a cyclic number.

It is not a de Polignac number, because 11666601220327 - 2²⁷ = 11666467002599 is a prime.

It is a super-2 number, since 2×11666601220327² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11666601220321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5833300610163 + 5833300610164.

It is an arithmetic number, because the mean of its divisors is an integer number (5833300610164).

Almost surely, 2^{11666601220327} is an apocalyptic number.

11666601220327 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666601220327 is an equidigital number, since it uses as much as digits as its factorization.

11666601220327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

Adding to 11666601220327 its reverse (72302210666611), we get a palindrome (83968811886938).

The spelling of 11666601220327 in words is "eleven trillion, six hundred sixty-six billion, six hundred one million, two hundred twenty thousand, three hundred twenty-seven".