10221668173 has 2 divisors, whose sum is σ = 10221668174. Its totient is φ = 10221668172.

The previous prime is 10221668143. The next prime is 10221668189. The reversal of 10221668173 is 37186612201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7382590084 + 2839078089 = 85922^2 + 53283^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221668173 - 2¹⁷ = 10221537101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221668143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110834086 + 5110834087.

It is an arithmetic number, because the mean of its divisors is an integer number (5110834087).

Almost surely, 2^10221668173 is an apocalyptic number.

It is an amenable number.

10221668173 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221668173 is an equidigital number, since it uses as much as digits as its factorization.

10221668173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 10221668173 in words is "ten billion, two hundred twenty-one million, six hundred sixty-eight thousand, one hundred seventy-three".