20022011 has 2 divisors, whose sum is σ = 20022012. Its totient is φ = 20022010.

The previous prime is 20021999. The next prime is 20022017. The reversal of 20022011 is 11022002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20022011 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20022011.

It is not a weakly prime, because it can be changed into another prime (20022017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011005 + 10011006.

It is an arithmetic number, because the mean of its divisors is an integer number (10011006).

Almost surely, 2^20022011 is an apocalyptic number.

20022011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022011 is an equidigital number, since it uses as much as digits as its factorization.

20022011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 20022011 is about 4474.5961828974. The cubic root of 20022011 is about 271.5413035617.

Adding to 20022011 its reverse (11022002), we get a palindrome (31044013).

Subtracting from 20022011 its reverse (11022002), we obtain a palindrome (9000009).

The spelling of 20022011 in words is "twenty million, twenty-two thousand, eleven".