20000120011211 has 4 divisors (see below), whose sum is σ = 20001134390112. Its totient is φ = 19999105632312.

The previous prime is 20000120011177. The next prime is 20000120011297. The reversal of 20000120011211 is 11211002100002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20000120011211 - 2³⁰ = 19999046269387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000120011192 and 20000120011201.

It is not an unprimeable number, because it can be changed into a prime (20000120011511) 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 3 ways as a sum of consecutive naturals, for example, 507159875 + ... + 507199308.

It is an arithmetic number, because the mean of its divisors is an integer number (5000283597528).

Almost surely, 2^{20000120011211} is an apocalyptic number.

20000120011211 is a deficient number, since it is larger than the sum of its proper divisors (1014378901).

20000120011211 is a wasteful number, since it uses less digits than its factorization.

20000120011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014378900.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20000120011211 its reverse (11211002100002), we get a palindrome (31211122111213).

The spelling of 20000120011211 in words is "twenty trillion, one hundred twenty million, eleven thousand, two hundred eleven".