212011022201977 has 2 divisors, whose sum is σ = 212011022201978. Its totient is φ = 212011022201976.

The previous prime is 212011022201963. The next prime is 212011022202019. The reversal of 212011022201977 is 779102220110212.

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., 143328879776016 + 68682142425961 = 11972004^2 + 8287469^2 .

It is a cyclic number.

It is not a de Polignac number, because 212011022201977 - 2⁴⁷ = 71273533846649 is a prime.

It is not a weakly prime, because it can be changed into another prime (212011022201947) 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, 106005511100988 + 106005511100989.

It is an arithmetic number, because the mean of its divisors is an integer number (106005511100989).

Almost surely, 2^{212011022201977} is an apocalyptic number.

It is an amenable number.

212011022201977 is a deficient number, since it is larger than the sum of its proper divisors (1).

212011022201977 is an equidigital number, since it uses as much as digits as its factorization.

212011022201977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 37.

The spelling of 212011022201977 in words is "two hundred twelve trillion, eleven billion, twenty-two million, two hundred one thousand, nine hundred seventy-seven".