20001120520211 has 2 divisors, whose sum is σ = 20001120520212. Its totient is φ = 20001120520210.

The previous prime is 20001120520193. The next prime is 20001120520261. The reversal of 20001120520211 is 11202502110002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001120520211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20001120520211.

It is not a weakly prime, because it can be changed into another prime (20001120520261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000560260105 + 10000560260106.

It is an arithmetic number, because the mean of its divisors is an integer number (10000560260106).

Almost surely, 2^{20001120520211} is an apocalyptic number.

20001120520211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001120520211 is an equidigital number, since it uses as much as digits as its factorization.

20001120520211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 20001120520211 its reverse (11202502110002), we get a palindrome (31203622630213).

The spelling of 20001120520211 in words is "twenty trillion, one billion, one hundred twenty million, five hundred twenty thousand, two hundred eleven".