220122201121 has 2 divisors, whose sum is σ = 220122201122. Its totient is φ = 220122201120.

The previous prime is 220122201113. The next prime is 220122201157. The reversal of 220122201121 is 121102221022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183986092096 + 36136109025 = 428936^2 + 190095^2 .

It is a cyclic number.

It is not a de Polignac number, because 220122201121 - 2³ = 220122201113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220122201095 and 220122201104.

It is not a weakly prime, because it can be changed into another prime (220122201161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110061100560 + 110061100561.

It is an arithmetic number, because the mean of its divisors is an integer number (110061100561).

Almost surely, 2^220122201121 is an apocalyptic number.

It is an amenable number.

220122201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220122201121 is an equidigital number, since it uses as much as digits as its factorization.

220122201121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220122201121 its reverse (121102221022), we get a palindrome (341224422143).

The spelling of 220122201121 in words is "two hundred twenty billion, one hundred twenty-two million, two hundred one thousand, one hundred twenty-one".