1000002012221 has 8 divisors (see below), whose sum is σ = 1024406086200. Its totient is φ = 975598594560.

The previous prime is 1000002012199. The next prime is 1000002012253. The reversal of 1000002012221 is 1222102000001.

It is a happy number.

1000002012221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 94012144996 + 905989867225 = 306614^2 + 951835^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000002012221 - 2⁶ = 1000002012157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000002011221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4559015 + ... + 4773323.

It is an arithmetic number, because the mean of its divisors is an integer number (128050760775).

Almost surely, 2^{1000002012221} is an apocalyptic number.

It is an amenable number.

1000002012221 is a deficient number, since it is larger than the sum of its proper divisors (24404073979).

1000002012221 is a wasteful number, since it uses less digits than its factorization.

1000002012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328159.

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

Adding to 1000002012221 its reverse (1222102000001), we get a palindrome (2222104012222).

The spelling of 1000002012221 in words is "one trillion, two million, twelve thousand, two hundred twenty-one".