201122220001 has 2 divisors, whose sum is σ = 201122220002. Its totient is φ = 201122220000.

The previous prime is 201122219989. The next prime is 201122220011. The reversal of 201122220001 is 100022221102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114068307600 + 87053912401 = 337740^2 + 295049^2 .

It is a cyclic number.

It is not a de Polignac number, because 201122220001 - 2⁷ = 201122219873 is a prime.

It is not a weakly prime, because it can be changed into another prime (201122220011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561110000 + 100561110001.

It is an arithmetic number, because the mean of its divisors is an integer number (100561110001).

Almost surely, 2^201122220001 is an apocalyptic number.

It is an amenable number.

201122220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

201122220001 is an equidigital number, since it uses as much as digits as its factorization.

201122220001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201122220001 its reverse (100022221102), we get a palindrome (301144441103).

The spelling of 201122220001 in words is "two hundred one billion, one hundred twenty-two million, two hundred twenty thousand, one".