20221002222173 has 2 divisors, whose sum is σ = 20221002222174. Its totient is φ = 20221002222172.

The previous prime is 20221002222143. The next prime is 20221002222181. The reversal of 20221002222173 is 37122220012202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18455298097369 + 1765704124804 = 4295963^2 + 1328798^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221002222173 - 2¹⁰ = 20221002221149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221002222103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110501111086 + 10110501111087.

It is an arithmetic number, because the mean of its divisors is an integer number (10110501111087).

Almost surely, 2^{20221002222173} is an apocalyptic number.

It is an amenable number.

20221002222173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221002222173 is an equidigital number, since it uses as much as digits as its factorization.

20221002222173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 20221002222173 its reverse (37122220012202), we get a palindrome (57343222234375).

The spelling of 20221002222173 in words is "twenty trillion, two hundred twenty-one billion, two million, two hundred twenty-two thousand, one hundred seventy-three".