20000233221 has 8 divisors (see below), whose sum is σ = 26667864864. Its totient is φ = 13333045200.

The previous prime is 20000233217. The next prime is 20000233241. The reversal of 20000233221 is 12233200002.

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

It is not a de Polignac number, because 20000233221 - 2² = 20000233217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20000233221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000233241) 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, 14575 + ... + 200531.

It is an arithmetic number, because the mean of its divisors is an integer number (3333483108).

Almost surely, 2^20000233221 is an apocalyptic number.

It is an amenable number.

20000233221 is a deficient number, since it is larger than the sum of its proper divisors (6667631643).

20000233221 is a wasteful number, since it uses less digits than its factorization.

20000233221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221811.

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

Adding to 20000233221 its reverse (12233200002), we get a palindrome (32233433223).

The spelling of 20000233221 in words is "twenty billion, two hundred thirty-three thousand, two hundred twenty-one".