1000000002221 has 16 divisors (see below), whose sum is σ = 1109006453376. Its totient is φ = 894129000000.

The previous prime is 1000000002217. The next prime is 1000000002227. The reversal of 1000000002221 is 1222000000001.

It is a cyclic number.

It is not a de Polignac number, because 1000000002221 - 2² = 1000000002217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000000002199 and 1000000002208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000002227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2812670 + ... + 3148191.

It is an arithmetic number, because the mean of its divisors is an integer number (69312903336).

Almost surely, 2^{1000000002221} is an apocalyptic number.

1000000002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000000002221 is a deficient number, since it is larger than the sum of its proper divisors (109006451155).

1000000002221 is a wasteful number, since it uses less digits than its factorization.

1000000002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5961124.

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

Adding to 1000000002221 its reverse (1222000000001), we get a palindrome (2222000002222).

The spelling of 1000000002221 in words is "one trillion, two thousand, two hundred twenty-one".