212203220984617 has 2 divisors, whose sum is σ = 212203220984618. Its totient is φ = 212203220984616.

The previous prime is 212203220984549. The next prime is 212203220984627. The reversal of 212203220984617 is 716489022302212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119985208658176 + 92218012326441 = 10953776^2 + 9603021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212203220984617 is a prime.

It is not a weakly prime, because it can be changed into another prime (212203220984627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101610492308 + 106101610492309.

It is an arithmetic number, because the mean of its divisors is an integer number (106101610492309).

Almost surely, 2^{212203220984617} is an apocalyptic number.

It is an amenable number.

212203220984617 is a deficient number, since it is larger than the sum of its proper divisors (1).

212203220984617 is an equidigital number, since it uses as much as digits as its factorization.

212203220984617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 212203220984617 in words is "two hundred twelve trillion, two hundred three billion, two hundred twenty million, nine hundred eighty-four thousand, six hundred seventeen".