22220002001 has 2 divisors, whose sum is σ = 22220002002. Its totient is φ = 22220002000.

The previous prime is 22220001971. The next prime is 22220002009. The reversal of 22220002001 is 10020002222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20936643025 + 1283358976 = 144695^2 + 35824^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220002001 - 2¹⁴ = 22219985617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22220002009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110001000 + 11110001001.

It is an arithmetic number, because the mean of its divisors is an integer number (11110001001).

Almost surely, 2^22220002001 is an apocalyptic number.

It is an amenable number.

22220002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220002001 is an equidigital number, since it uses as much as digits as its factorization.

22220002001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 22220002001 its reverse (10020002222), we get a palindrome (32240004223).

The spelling of 22220002001 in words is "twenty-two billion, two hundred twenty million, two thousand, one".