20001033211 has 4 divisors (see below), whose sum is σ = 20001319624. Its totient is φ = 20000746800.

The previous prime is 20001033187. The next prime is 20001033223. The reversal of 20001033211 is 11233010002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20001033211 - 2⁷ = 20001033083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001033191 and 20001033200.

It is not an unprimeable number, because it can be changed into a prime (20001033271) 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, 37831 + ... + 203551.

It is an arithmetic number, because the mean of its divisors is an integer number (5000329906).

Almost surely, 2^20001033211 is an apocalyptic number.

20001033211 is a deficient number, since it is larger than the sum of its proper divisors (286413).

20001033211 is a wasteful number, since it uses less digits than its factorization.

20001033211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286412.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20001033211 its reverse (11233010002), we get a palindrome (31234043213).

The spelling of 20001033211 in words is "twenty billion, one million, thirty-three thousand, two hundred eleven".