10221212012177 has 2 divisors, whose sum is σ = 10221212012178. Its totient is φ = 10221212012176.

The previous prime is 10221212012173. The next prime is 10221212012239. The reversal of 10221212012177 is 77121021212201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5386859963521 + 4834352048656 = 2320961^2 + 2198716^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221212012177 - 2² = 10221212012173 is a prime.

It is not a weakly prime, because it can be changed into another prime (10221212012171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110606006088 + 5110606006089.

It is an arithmetic number, because the mean of its divisors is an integer number (5110606006089).

Almost surely, 2^{10221212012177} is an apocalyptic number.

It is an amenable number.

10221212012177 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221212012177 is an equidigital number, since it uses as much as digits as its factorization.

10221212012177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 29.

Adding to 10221212012177 its reverse (77121021212201), we get a palindrome (87342233224378).

The spelling of 10221212012177 in words is "ten trillion, two hundred twenty-one billion, two hundred twelve million, twelve thousand, one hundred seventy-seven".