217126002242 has 6 divisors (see below), whose sum is σ = 325689991833. Its totient is φ = 108562671632.

The previous prime is 217126002211. The next prime is 217126002253. The reversal of 217126002242 is 242200621712.

It can be written as a sum of positive squares in 2 ways, for example, as 216709801441 + 416200801 = 465521^2 + 20401^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=329489.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 494234 + ... + 823722.

Almost surely, 2^217126002242 is an apocalyptic number.

217126002242 is a deficient number, since it is larger than the sum of its proper divisors (108563989591).

217126002242 is an frugal number, since it uses more digits than its factorization.

217126002242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658980 (or 329491 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 217126002242 its reverse (242200621712), we get a palindrome (459326623954).

The spelling of 217126002242 in words is "two hundred seventeen billion, one hundred twenty-six million, two thousand, two hundred forty-two".