20201210011 has 4 divisors (see below), whose sum is σ = 20203321072. Its totient is φ = 20199098952.

The previous prime is 20201209981. The next prime is 20201210033. The reversal of 20201210011 is 11001210202.

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 20201210011 - 2¹¹ = 20201207963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201210011.

It is not an unprimeable number, because it can be changed into a prime (20201210111) 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 in 3 ways as a sum of consecutive naturals, for example, 1041111 + ... + 1060336.

It is an arithmetic number, because the mean of its divisors is an integer number (5050830268).

Almost surely, 2^20201210011 is an apocalyptic number.

20201210011 is a deficient number, since it is larger than the sum of its proper divisors (2111061).

20201210011 is an equidigital number, since it uses as much as digits as its factorization.

20201210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111060.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20201210011 its reverse (11001210202), we get a palindrome (31202420213).

The spelling of 20201210011 in words is "twenty billion, two hundred one million, two hundred ten thousand, eleven".