1010020002221 has 2 divisors, whose sum is σ = 1010020002222. Its totient is φ = 1010020002220.

The previous prime is 1010020002203. The next prime is 1010020002281. The reversal of 1010020002221 is 1222000200101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 911728974025 + 98291028196 = 954845^2 + 313514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010020002221 - 2³⁰ = 1008946260397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010020002281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505010001110 + 505010001111.

It is an arithmetic number, because the mean of its divisors is an integer number (505010001111).

Almost surely, 2^{1010020002221} is an apocalyptic number.

It is an amenable number.

1010020002221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010020002221 is an equidigital number, since it uses as much as digits as its factorization.

1010020002221 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 1010020002221 its reverse (1222000200101), we get a palindrome (2232020202322).

The spelling of 1010020002221 in words is "one trillion, ten billion, twenty million, two thousand, two hundred twenty-one".