220200212021 has 2 divisors, whose sum is σ = 220200212022. Its totient is φ = 220200212020.

The previous prime is 220200211967. The next prime is 220200212051. The reversal of 220200212021 is 120212002022.

220200212021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180395572900 + 39804639121 = 424730^2 + 199511^2 .

It is a cyclic number.

It is not a de Polignac number, because 220200212021 - 2¹⁸ = 220199949877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220200211987 and 220200212005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220200212051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100106010 + 110100106011.

It is an arithmetic number, because the mean of its divisors is an integer number (110100106011).

Almost surely, 2^220200212021 is an apocalyptic number.

It is an amenable number.

220200212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220200212021 is an equidigital number, since it uses as much as digits as its factorization.

220200212021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220200212021 its reverse (120212002022), we get a palindrome (340412214043).

The spelling of 220200212021 in words is "two hundred twenty billion, two hundred million, two hundred twelve thousand, twenty-one".