212011222112057 has 2 divisors, whose sum is σ = 212011222112058. Its totient is φ = 212011222112056.

The previous prime is 212011222111981. The next prime is 212011222112161. The reversal of 212011222112057 is 750211222110212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150322827305641 + 61688394806416 = 12260621^2 + 7854196^2 .

It is a cyclic number.

It is not a de Polignac number, because 212011222112057 - 2⁴⁰ = 210911710484281 is a prime.

It is not a weakly prime, because it can be changed into another prime (212011222112957) 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, 106005611056028 + 106005611056029.

It is an arithmetic number, because the mean of its divisors is an integer number (106005611056029).

Almost surely, 2^{212011222112057} is an apocalyptic number.

It is an amenable number.

212011222112057 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011222112057 is an equidigital number, since it uses as much as digits as its factorization.

212011222112057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 29.

Adding to 212011222112057 its reverse (750211222110212), we get a palindrome (962222444222269).

The spelling of 212011222112057 in words is "two hundred twelve trillion, eleven billion, two hundred twenty-two million, one hundred twelve thousand, fifty-seven".