20000211 has 48 divisors (see below), whose sum is σ = 35546112. Its totient is φ = 9757440.

The previous prime is 20000171. The next prime is 20000213. The reversal of 20000211 is 11200002.

20000211 = 18² + 19² + ... + 391².

It is a happy number.

It is not a de Polignac number, because 20000211 - 2⁶ = 20000147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20000211.

It is not an unprimeable number, because it can be changed into a prime (20000213) 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 47 ways as a sum of consecutive naturals, for example, 42966 + ... + 43428.

It is an arithmetic number, because the mean of its divisors is an integer number (740544).

Almost surely, 2^20000211 is an apocalyptic number.

20000211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20000211 is a deficient number, since it is larger than the sum of its proper divisors (15545901).

20000211 is a wasteful number, since it uses less digits than its factorization.

20000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 20000211 is about 4472.1595454545. The cubic root of 20000211 is about 271.4427162263.

Adding to 20000211 its reverse (11200002), we get a palindrome (31200213).

It can be divided in two parts, 200002 and 11, that multiplied together give a palindrome (2200022).

The spelling of 20000211 in words is "twenty million, two hundred eleven", and thus it is an aban number.