220222020121 has 2 divisors, whose sum is σ = 220222020122. Its totient is φ = 220222020120.

The previous prime is 220222020107. The next prime is 220222020131. The reversal of 220222020121 is 121020222022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188951049225 + 31270970896 = 434685^2 + 176836^2 .

It is a cyclic number.

It is not a de Polignac number, because 220222020121 - 2⁷ = 220222019993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220222020095 and 220222020104.

It is not a weakly prime, because it can be changed into another prime (220222020101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110111010060 + 110111010061.

It is an arithmetic number, because the mean of its divisors is an integer number (110111010061).

Almost surely, 2^220222020121 is an apocalyptic number.

It is an amenable number.

220222020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220222020121 is an equidigital number, since it uses as much as digits as its factorization.

220222020121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220222020121 its reverse (121020222022), we get a palindrome (341242242143).

The spelling of 220222020121 in words is "two hundred twenty billion, two hundred twenty-two million, twenty thousand, one hundred twenty-one".