20203021211 has 4 divisors (see below), whose sum is σ = 20399167152. Its totient is φ = 20006875272.

The previous prime is 20203021183. The next prime is 20203021217. The reversal of 20203021211 is 11212030202.

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 20203021211 - 2²⁶ = 20135912347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203021217) 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, 98072816 + ... + 98073021.

It is an arithmetic number, because the mean of its divisors is an integer number (5099791788).

Almost surely, 2^20203021211 is an apocalyptic number.

20203021211 is a deficient number, since it is larger than the sum of its proper divisors (196145941).

20203021211 is a wasteful number, since it uses less digits than its factorization.

20203021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196145940.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20203021211 its reverse (11212030202), we get a palindrome (31415051413).

The spelling of 20203021211 in words is "twenty billion, two hundred three million, twenty-one thousand, two hundred eleven".