210012212112217 has 2 divisors, whose sum is σ = 210012212112218. Its totient is φ = 210012212112216.

The previous prime is 210012212112137. The next prime is 210012212112223. The reversal of 210012212112217 is 712211212210012.

It is a happy number.

210012212112217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186715526743321 + 23296685368896 = 13664389^2 + 4826664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210012212112217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210012212112191 and 210012212112200.

It is not a weakly prime, because it can be changed into another prime (210012212115217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105006106056108 + 105006106056109.

It is an arithmetic number, because the mean of its divisors is an integer number (105006106056109).

Almost surely, 2^{210012212112217} is an apocalyptic number.

It is an amenable number.

210012212112217 is a deficient number, since it is larger than the sum of its proper divisors (1).

210012212112217 is an equidigital number, since it uses as much as digits as its factorization.

210012212112217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 210012212112217 its reverse (712211212210012), we get a palindrome (922223424322229).

The spelling of 210012212112217 in words is "two hundred ten trillion, twelve billion, two hundred twelve million, one hundred twelve thousand, two hundred seventeen".