200220101021 has 2 divisors, whose sum is σ = 200220101022. Its totient is φ = 200220101020.

The previous prime is 200220100961. The next prime is 200220101089. The reversal of 200220101021 is 120101022002.

It is a happy number.

200220101021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195263236996 + 4956864025 = 441886^2 + 70405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200220101021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200220100993 and 200220101011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200220101821) 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, 100110050510 + 100110050511.

It is an arithmetic number, because the mean of its divisors is an integer number (100110050511).

Almost surely, 2^200220101021 is an apocalyptic number.

It is an amenable number.

200220101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200220101021 is an equidigital number, since it uses as much as digits as its factorization.

200220101021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200220101021 its reverse (120101022002), we get a palindrome (320321123023).

The spelling of 200220101021 in words is "two hundred billion, two hundred twenty million, one hundred one thousand, twenty-one".