220000022173 has 2 divisors, whose sum is σ = 220000022174. Its totient is φ = 220000022172.

The previous prime is 220000022167. The next prime is 220000022183. The reversal of 220000022173 is 371220000022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161775297369 + 58224724804 = 402213^2 + 241298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220000022173 is a prime.

It is a super-2 number, since 2×220000022173² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220000022173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220000022183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110000011086 + 110000011087.

It is an arithmetic number, because the mean of its divisors is an integer number (110000011087).

Almost surely, 2^220000022173 is an apocalyptic number.

It is an amenable number.

220000022173 is a deficient number, since it is larger than the sum of its proper divisors (1).

220000022173 is an equidigital number, since it uses as much as digits as its factorization.

220000022173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

Adding to 220000022173 its reverse (371220000022), we get a palindrome (591220022195).

The spelling of 220000022173 in words is "two hundred twenty billion, twenty-two thousand, one hundred seventy-three".