212101010020997 has 2 divisors, whose sum is σ = 212101010020998. Its totient is φ = 212101010020996.

The previous prime is 212101010020967. The next prime is 212101010021051. The reversal of 212101010020997 is 799020010101212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209831042918116 + 2269967102881 = 14485546^2 + 1506641^2 .

It is a cyclic number.

It is not a de Polignac number, because 212101010020997 - 2⁸ = 212101010020741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212101010020937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050505010498 + 106050505010499.

It is an arithmetic number, because the mean of its divisors is an integer number (106050505010499).

Almost surely, 2^{212101010020997} is an apocalyptic number.

It is an amenable number.

212101010020997 is a deficient number, since it is larger than the sum of its proper divisors (1).

212101010020997 is an equidigital number, since it uses as much as digits as its factorization.

212101010020997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 212101010020997 in words is "two hundred twelve trillion, one hundred one billion, ten million, twenty thousand, nine hundred ninety-seven".