20002211122211 has 2 divisors, whose sum is σ = 20002211122212. Its totient is φ = 20002211122210.

The previous prime is 20002211122207. The next prime is 20002211122217. The reversal of 20002211122211 is 11222111220002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20002211122211 - 2² = 20002211122207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20002211122211.

It is not a weakly prime, because it can be changed into another prime (20002211122217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001105561105 + 10001105561106.

It is an arithmetic number, because the mean of its divisors is an integer number (10001105561106).

Almost surely, 2^{20002211122211} is an apocalyptic number.

20002211122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002211122211 is an equidigital number, since it uses as much as digits as its factorization.

20002211122211 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 17.

Adding to 20002211122211 its reverse (11222111220002), we get a palindrome (31224322342213).

The spelling of 20002211122211 in words is "twenty trillion, two billion, two hundred eleven million, one hundred twenty-two thousand, two hundred eleven".