1222202223173 has 2 divisors, whose sum is σ = 1222202223174. Its totient is φ = 1222202223172.

The previous prime is 1222202223169. The next prime is 1222202223217. The reversal of 1222202223173 is 3713222022221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 631606899169 + 590595324004 = 794737^2 + 768502^2 .

It is an emirp because it is prime and its reverse (3713222022221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222202223173 - 2² = 1222202223169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222202223773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611101111586 + 611101111587.

It is an arithmetic number, because the mean of its divisors is an integer number (611101111587).

Almost surely, 2^{1222202223173} is an apocalyptic number.

It is an amenable number.

1222202223173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222202223173 is an equidigital number, since it uses as much as digits as its factorization.

1222202223173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

Adding to 1222202223173 its reverse (3713222022221), we get a palindrome (4935424245394).

The spelling of 1222202223173 in words is "one trillion, two hundred twenty-two billion, two hundred two million, two hundred twenty-three thousand, one hundred seventy-three".