2220221112217 has 2 divisors, whose sum is σ = 2220221112218. Its totient is φ = 2220221112216.

The previous prime is 2220221112211. The next prime is 2220221112251. The reversal of 2220221112217 is 7122111220222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1807548491401 + 412672620816 = 1344451^2 + 642396^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220221112217 - 2³ = 2220221112209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220221112191 and 2220221112200.

It is not a weakly prime, because it can be changed into another prime (2220221112211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110110556108 + 1110110556109.

It is an arithmetic number, because the mean of its divisors is an integer number (1110110556109).

Almost surely, 2^{2220221112217} is an apocalyptic number.

It is an amenable number.

2220221112217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220221112217 is an equidigital number, since it uses as much as digits as its factorization.

2220221112217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 2220221112217 its reverse (7122111220222), we get a palindrome (9342332332439).

The spelling of 2220221112217 in words is "two trillion, two hundred twenty billion, two hundred twenty-one million, one hundred twelve thousand, two hundred seventeen".