1002020221117 has 2 divisors, whose sum is σ = 1002020221118. Its totient is φ = 1002020221116.

The previous prime is 1002020221009. The next prime is 1002020221141. The reversal of 1002020221117 is 7111220202001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 605052178201 + 396968042916 = 777851^2 + 630054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002020221117 - 2¹¹ = 1002020219069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002020221094 and 1002020221103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002020225117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501010110558 + 501010110559.

It is an arithmetic number, because the mean of its divisors is an integer number (501010110559).

Almost surely, 2^{1002020221117} is an apocalyptic number.

It is an amenable number.

1002020221117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002020221117 is an equidigital number, since it uses as much as digits as its factorization.

1002020221117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 1002020221117 its reverse (7111220202001), we get a palindrome (8113240423118).

The spelling of 1002020221117 in words is "one trillion, two billion, twenty million, two hundred twenty-one thousand, one hundred seventeen".