20000221233 has 4 divisors (see below), whose sum is σ = 26666961648. Its totient is φ = 13333480820.

The previous prime is 20000221211. The next prime is 20000221261. The reversal of 20000221233 is 33212200002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20000221233 - 2⁶ = 20000221169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20000221333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3333370203 + ... + 3333370208.

It is an arithmetic number, because the mean of its divisors is an integer number (6666740412).

Almost surely, 2^20000221233 is an apocalyptic number.

It is an amenable number.

20000221233 is a deficient number, since it is larger than the sum of its proper divisors (6666740415).

20000221233 is an equidigital number, since it uses as much as digits as its factorization.

20000221233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6666740414.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20000221233 its reverse (33212200002), we get a palindrome (53212421235).

The spelling of 20000221233 in words is "twenty billion, two hundred twenty-one thousand, two hundred thirty-three".