215222041273 has 2 divisors, whose sum is σ = 215222041274. Its totient is φ = 215222041272.

The previous prime is 215222041253. The next prime is 215222041297. The reversal of 215222041273 is 372140222512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179739537849 + 35482503424 = 423957^2 + 188368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215222041273 is a prime.

It is not a weakly prime, because it can be changed into another prime (215222041253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107611020636 + 107611020637.

It is an arithmetic number, because the mean of its divisors is an integer number (107611020637).

Almost surely, 2^215222041273 is an apocalyptic number.

It is an amenable number.

215222041273 is a deficient number, since it is larger than the sum of its proper divisors (1).

215222041273 is an equidigital number, since it uses as much as digits as its factorization.

215222041273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 215222041273 its reverse (372140222512), we get a palindrome (587362263785).

The spelling of 215222041273 in words is "two hundred fifteen billion, two hundred twenty-two million, forty-one thousand, two hundred seventy-three".