20003233421 has 8 divisors (see below), whose sum is σ = 21066166080. Its totient is φ = 18941313888.

The previous prime is 20003233387. The next prime is 20003233429. The reversal of 20003233421 is 12433230002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20003233421 - 2¹⁴ = 20003217037 is a prime.

It is a super-2 number, since 2×20003233421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20003233393 and 20003233402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003233429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212576 + ... + 291881.

It is an arithmetic number, because the mean of its divisors is an integer number (2633270760).

Almost surely, 2^20003233421 is an apocalyptic number.

It is an amenable number.

20003233421 is a deficient number, since it is larger than the sum of its proper divisors (1062932659).

20003233421 is a wasteful number, since it uses less digits than its factorization.

20003233421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506563.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20003233421 its reverse (12433230002), we get a palindrome (32436463423).

The spelling of 20003233421 in words is "twenty billion, three million, two hundred thirty-three thousand, four hundred twenty-one".