100222221173 has 2 divisors, whose sum is σ = 100222221174. Its totient is φ = 100222221172.

The previous prime is 100222221133. The next prime is 100222221181. The reversal of 100222221173 is 371122222001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80160898129 + 20061323044 = 283127^2 + 141638^2 .

It is an emirp because it is prime and its reverse (371122222001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100222221173 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100222221133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50111110586 + 50111110587.

It is an arithmetic number, because the mean of its divisors is an integer number (50111110587).

Almost surely, 2^100222221173 is an apocalyptic number.

It is an amenable number.

100222221173 is a deficient number, since it is larger than the sum of its proper divisors (1).

100222221173 is an equidigital number, since it uses as much as digits as its factorization.

100222221173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 100222221173 its reverse (371122222001), we get a palindrome (471344443174).

The spelling of 100222221173 in words is "one hundred billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred seventy-three".