12000021010177 has 2 divisors, whose sum is σ = 12000021010178. Its totient is φ = 12000021010176.

The previous prime is 12000021010147. The next prime is 12000021010277. The reversal of 12000021010177 is 77101012000021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8066684916481 + 3933336093696 = 2840191^2 + 1983264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12000021010177 is a prime.

It is not a weakly prime, because it can be changed into another prime (12000021010147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000010505088 + 6000010505089.

It is an arithmetic number, because the mean of its divisors is an integer number (6000010505089).

Almost surely, 2^{12000021010177} is an apocalyptic number.

It is an amenable number.

12000021010177 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000021010177 is an equidigital number, since it uses as much as digits as its factorization.

12000021010177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 22.

Adding to 12000021010177 its reverse (77101012000021), we get a palindrome (89101033010198).

The spelling of 12000021010177 in words is "twelve trillion, twenty-one million, ten thousand, one hundred seventy-seven".