1010020000221 has 6 divisors (see below), whose sum is σ = 1458917778110. Its totient is φ = 673346666808.

The previous prime is 1010020000207. The next prime is 1010020000289. The reversal of 1010020000221 is 1220000200101.

It can be written as a sum of positive squares in only one way, i.e., 1000022000121 + 9998000100 = 1000011^2 + 99990^2 .

It is not a de Polignac number, because 1010020000221 - 2⁵ = 1010020000189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 112224444469 = 1010020000221 / (1 + 0 + 1 + 0 + 0 + 2 + 0 + 0 + 0 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010020000021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56112222226 + ... + 56112222243.

Almost surely, 2^{1010020000221} is an apocalyptic number.

It is an amenable number.

1010020000221 is a deficient number, since it is larger than the sum of its proper divisors (448897777889).

1010020000221 is a wasteful number, since it uses less digits than its factorization.

1010020000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112224444475 (or 112224444472 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1010020000221 its reverse (1220000200101), we get a palindrome (2230020200322).

The spelling of 1010020000221 in words is "one trillion, ten billion, twenty million, two hundred twenty-one", and thus it is an aban number.