121122201221173 has 2 divisors, whose sum is σ = 121122201221174. Its totient is φ = 121122201221172.

The previous prime is 121122201221143. The next prime is 121122201221221. The reversal of 121122201221173 is 371122102221121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115013977944849 + 6108223276324 = 10724457^2 + 2471482^2 .

It is a cyclic number.

It is not a de Polignac number, because 121122201221173 - 2²¹ = 121122199124021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121122201221143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561100610586 + 60561100610587.

It is an arithmetic number, because the mean of its divisors is an integer number (60561100610587).

Almost surely, 2^{121122201221173} is an apocalyptic number.

It is an amenable number.

121122201221173 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122201221173 is an equidigital number, since it uses as much as digits as its factorization.

121122201221173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 121122201221173 its reverse (371122102221121), we get a palindrome (492244303442294).

The spelling of 121122201221173 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred one million, two hundred twenty-one thousand, one hundred seventy-three".