222020022121 has 2 divisors, whose sum is σ = 222020022122. Its totient is φ = 222020022120.

The previous prime is 222020022071. The next prime is 222020022167. The reversal of 222020022121 is 121220020222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220158962521 + 1861059600 = 469211^2 + 43140^2 .

It is a cyclic number.

It is not a de Polignac number, because 222020022121 - 2²¹ = 222017924969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222020022095 and 222020022104.

It is not a weakly prime, because it can be changed into another prime (222020022221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010011060 + 111010011061.

It is an arithmetic number, because the mean of its divisors is an integer number (111010011061).

Almost surely, 2^222020022121 is an apocalyptic number.

It is an amenable number.

222020022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222020022121 is an equidigital number, since it uses as much as digits as its factorization.

222020022121 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 222020022121 its reverse (121220020222), we get a palindrome (343240042343).

The spelling of 222020022121 in words is "two hundred twenty-two billion, twenty million, twenty-two thousand, one hundred twenty-one".