20002120011211 has 16 divisors (see below), whose sum is σ = 22284263158528. Its totient is φ = 17828800358400.

The previous prime is 20002120011187. The next prime is 20002120011229. The reversal of 20002120011211 is 11211002120002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002120011211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002120011191 and 20002120011200.

It is not an unprimeable number, because it can be changed into a prime (20002120011271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54118950 + ... + 54487291.

It is an arithmetic number, because the mean of its divisors is an integer number (1392766447408).

Almost surely, 2^{20002120011211} is an apocalyptic number.

20002120011211 is a deficient number, since it is larger than the sum of its proper divisors (2282143147317).

20002120011211 is a wasteful number, since it uses less digits than its factorization.

20002120011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108606742.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20002120011211 its reverse (11211002120002), we get a palindrome (31213122131213).

The spelling of 20002120011211 in words is "twenty trillion, two billion, one hundred twenty million, eleven thousand, two hundred eleven".