20030020211 has 4 divisors (see below), whose sum is σ = 21208256712. Its totient is φ = 18851783712.

The previous prime is 20030020201. The next prime is 20030020217. The reversal of 20030020211 is 11202003002.

It is a happy number.

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 20030020211 - 2²² = 20025825907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20030020192 and 20030020201.

It is not an unprimeable number, because it can be changed into a prime (20030020217) 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, 589118225 + ... + 589118258.

It is an arithmetic number, because the mean of its divisors is an integer number (5302064178).

Almost surely, 2^20030020211 is an apocalyptic number.

20030020211 is a deficient number, since it is larger than the sum of its proper divisors (1178236501).

20030020211 is a wasteful number, since it uses less digits than its factorization.

20030020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178236500.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20030020211 its reverse (11202003002), we get a palindrome (31232023213).

The spelling of 20030020211 in words is "twenty billion, thirty million, twenty thousand, two hundred eleven".