20203221033 has 12 divisors (see below), whose sum is σ = 29266534128. Its totient is φ = 13429996920.

The previous prime is 20203221023. The next prime is 20203221041. The reversal of 20203221033 is 33012230202.

It is a happy number.

It is not a de Polignac number, because 20203221033 - 2¹⁸ = 20202958889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20203220997 and 20203221015.

It is not an unprimeable number, because it can be changed into a prime (20203221023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3231463 + ... + 3237708.

It is an arithmetic number, because the mean of its divisors is an integer number (2438877844).

Almost surely, 2^20203221033 is an apocalyptic number.

It is an amenable number.

20203221033 is a deficient number, since it is larger than the sum of its proper divisors (9063313095).

20203221033 is a wasteful number, since it uses less digits than its factorization.

20203221033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6469524 (or 6469521 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20203221033 its reverse (33012230202), we get a palindrome (53215451235).

The spelling of 20203221033 in words is "twenty billion, two hundred three million, two hundred twenty-one thousand, thirty-three".