1220022444217 has 2 divisors, whose sum is σ = 1220022444218. Its totient is φ = 1220022444216.

The previous prime is 1220022444209. The next prime is 1220022444331. The reversal of 1220022444217 is 7124442200221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 896015589561 + 324006854656 = 946581^2 + 569216^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220022444217 - 2³ = 1220022444209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220022444517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610011222108 + 610011222109.

It is an arithmetic number, because the mean of its divisors is an integer number (610011222109).

Almost surely, 2^{1220022444217} is an apocalyptic number.

It is an amenable number.

1220022444217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220022444217 is an equidigital number, since it uses as much as digits as its factorization.

1220022444217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 31.

Adding to 1220022444217 its reverse (7124442200221), we get a palindrome (8344464644438).

The spelling of 1220022444217 in words is "one trillion, two hundred twenty billion, twenty-two million, four hundred forty-four thousand, two hundred seventeen".