1000002010221 has 24 divisors (see below), whose sum is σ = 1485202993560. Its totient is φ = 648088511616.

The previous prime is 1000002010159. The next prime is 1000002010223. The reversal of 1000002010221 is 1220102000001.

It can be written as a sum of positive squares in 4 ways, for example, as 465437772900 + 534564237321 = 682230^2 + 731139^2 .

It is not a de Polignac number, because 1000002010221 - 2¹⁹ = 1000001485933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000002010223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9564706 + ... + 9668691.

It is an arithmetic number, because the mean of its divisors is an integer number (61883458065).

Almost surely, 2^{1000002010221} is an apocalyptic number.

It is an amenable number.

1000002010221 is a deficient number, since it is larger than the sum of its proper divisors (485200983339).

1000002010221 is a wasteful number, since it uses less digits than its factorization.

1000002010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19233565 (or 19233562 counting only the distinct ones).

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

Adding to 1000002010221 its reverse (1220102000001), we get a palindrome (2220104010222).

The spelling of 1000002010221 in words is "one trillion, two million, ten thousand, two hundred twenty-one".