22233000221 has 4 divisors (see below), whose sum is σ = 22265841372. Its totient is φ = 22200159072.

The previous prime is 22233000217. The next prime is 22233000239. The reversal of 22233000221 is 12200033222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20776051321 + 1456948900 = 144139^2 + 38170^2 .

It is a cyclic number.

It is not a de Polignac number, because 22233000221 - 2² = 22233000217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22233000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22233000281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16419560 + ... + 16420913.

It is an arithmetic number, because the mean of its divisors is an integer number (5566460343).

Almost surely, 2^22233000221 is an apocalyptic number.

It is an amenable number.

22233000221 is a deficient number, since it is larger than the sum of its proper divisors (32841151).

22233000221 is an equidigital number, since it uses as much as digits as its factorization.

22233000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32841150.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 22233000221 its reverse (12200033222), we get a palindrome (34433033443).

The spelling of 22233000221 in words is "twenty-two billion, two hundred thirty-three million, two hundred twenty-one", and thus it is an aban number.