222200201021 has 2 divisors, whose sum is σ = 222200201022. Its totient is φ = 222200201020.

The previous prime is 222200201009. The next prime is 222200201039. The reversal of 222200201021 is 120102002222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222034152025 + 166048996 = 471205^2 + 12886^2 .

It is a cyclic number.

It is not a de Polignac number, because 222200201021 - 2¹⁴ = 222200184637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222200200987 and 222200201005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222200201081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111100100510 + 111100100511.

It is an arithmetic number, because the mean of its divisors is an integer number (111100100511).

Almost surely, 2^222200201021 is an apocalyptic number.

It is an amenable number.

222200201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222200201021 is an equidigital number, since it uses as much as digits as its factorization.

222200201021 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 14.

Adding to 222200201021 its reverse (120102002222), we get a palindrome (342302203243).

The spelling of 222200201021 in words is "two hundred twenty-two billion, two hundred million, two hundred one thousand, twenty-one".