20000011 has 8 divisors (see below), whose sum is σ = 20253600. Its totient is φ = 19748352.

The previous prime is 20000003. The next prime is 20000023. The reversal of 20000011 is 11000002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20000011 - 2³ = 20000003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33090 + ... + 33688.

It is an arithmetic number, because the mean of its divisors is an integer number (2531700).

Almost surely, 2^20000011 is an apocalyptic number.

20000011 is a deficient number, since it is larger than the sum of its proper divisors (253589).

20000011 is a wasteful number, since it uses less digits than its factorization.

20000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 20000011 is about 4472.1371848368. The cubic root of 20000011 is about 271.4418114238.

Adding to 20000011 its reverse (11000002), we get a palindrome (31000013).

Subtracting from 20000011 its reverse (11000002), we obtain a palindrome (9000009).

Multiplying 20000011 by its reverse (11000002), we get a palindrome (220000161000022).

It can be divided in two parts, 2000001 and 1, that added together give a palindrome (2000002).

The spelling of 20000011 in words is "twenty million, eleven", and thus it is an aban number and an uban number.