122221022173 has 2 divisors, whose sum is σ = 122221022174. Its totient is φ = 122221022172.

The previous prime is 122221022149. The next prime is 122221022221. The reversal of 122221022173 is 371220122221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121356779769 + 864242404 = 348363^2 + 29398^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221022173 - 2²¹ = 122218925021 is a prime.

It is a super-2 number, since 2×122221022173² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122221022773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110511086 + 61110511087.

It is an arithmetic number, because the mean of its divisors is an integer number (61110511087).

Almost surely, 2^122221022173 is an apocalyptic number.

It is an amenable number.

122221022173 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221022173 is an equidigital number, since it uses as much as digits as its factorization.

122221022173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 122221022173 its reverse (371220122221), we get a palindrome (493441144394).

The spelling of 122221022173 in words is "one hundred twenty-two billion, two hundred twenty-one million, twenty-two thousand, one hundred seventy-three".