20101000211 has 4 divisors (see below), whose sum is σ = 20123163192. Its totient is φ = 20078837232.

The previous prime is 20101000207. The next prime is 20101000223. The reversal of 20101000211 is 11200010102.

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 20101000211 - 2² = 20101000207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101000261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11080130 + ... + 11081943.

It is an arithmetic number, because the mean of its divisors is an integer number (5030790798).

Almost surely, 2^20101000211 is an apocalyptic number.

20101000211 is a deficient number, since it is larger than the sum of its proper divisors (22162981).

20101000211 is an equidigital number, since it uses as much as digits as its factorization.

20101000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22162980.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20101000211 its reverse (11200010102), we get a palindrome (31301010313).

The spelling of 20101000211 in words is "twenty billion, one hundred one million, two hundred eleven", and thus it is an aban number.