20200101222221 has 8 divisors (see below), whose sum is σ = 20244425779200. Its totient is φ = 20155785637680.

The previous prime is 20200101222187. The next prime is 20200101222263. The reversal of 20200101222221 is 12222210100202.

It is a happy number.

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 20200101222221 - 2¹⁰ = 20200101221197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20200101222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200101225221) 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, 2274500 + ... + 6750818.

It is an arithmetic number, because the mean of its divisors is an integer number (2530553222400).

Almost surely, 2^{20200101222221} is an apocalyptic number.

It is an amenable number.

20200101222221 is a deficient number, since it is larger than the sum of its proper divisors (44324556979).

20200101222221 is an equidigital number, since it uses as much as digits as its factorization.

20200101222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486219.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20200101222221 its reverse (12222210100202), we get a palindrome (32422311322423).

The spelling of 20200101222221 in words is "twenty trillion, two hundred billion, one hundred one million, two hundred twenty-two thousand, two hundred twenty-one".