20022200000221 has 8 divisors (see below), whose sum is σ = 20047683888344. Its totient is φ = 19996722158400.

The previous prime is 20022200000203. The next prime is 20022200000249. The reversal of 20022200000221 is 12200000222002.

It can be written as a sum of positive squares in 4 ways, for example, as 16968055792900 + 3054144207321 = 4119230^2 + 1747611^2 .

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 20022200000221 - 2⁹ = 20022199999709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022200000261) 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, 5134171 + ... + 8148871.

It is an arithmetic number, because the mean of its divisors is an integer number (2505960486043).

Almost surely, 2^{20022200000221} is an apocalyptic number.

It is an amenable number.

20022200000221 is a deficient number, since it is larger than the sum of its proper divisors (25483888123).

20022200000221 is an equidigital number, since it uses as much as digits as its factorization.

20022200000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023151.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20022200000221 its reverse (12200000222002), we get a palindrome (32222200222223).

The spelling of 20022200000221 in words is "twenty trillion, twenty-two billion, two hundred million, two hundred twenty-one", and thus it is an aban number.