20200200222221 has 2 divisors, whose sum is σ = 20200200222222. Its totient is φ = 20200200222220.

The previous prime is 20200200222199. The next prime is 20200200222229. The reversal of 20200200222221 is 12222200200202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15027368545225 + 5172831676996 = 3876515^2 + 2274386^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200200222221 - 2¹⁴ = 20200200205837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20200200222221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20200200222229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100100111110 + 10100100111111.

It is an arithmetic number, because the mean of its divisors is an integer number (10100100111111).

Almost surely, 2^{20200200222221} is an apocalyptic number.

It is an amenable number.

20200200222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200200222221 is an equidigital number, since it uses as much as digits as its factorization.

20200200222221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 20200200222221 its reverse (12222200200202), we get a palindrome (32422400422423).

The spelling of 20200200222221 in words is "twenty trillion, two hundred billion, two hundred million, two hundred twenty-two thousand, two hundred twenty-one".