1000000223221 has 8 divisors (see below), whose sum is σ = 1002359144160. Its totient is φ = 997641760752.

The previous prime is 1000000223219. The next prime is 1000000223237. The reversal of 1000000223221 is 1223220000001.

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 1000000223221 - 2¹ = 1000000223219 is a prime.

It is a super-2 number, since 2×1000000223221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000223921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4468290 + ... + 4686748.

It is an arithmetic number, because the mean of its divisors is an integer number (125294893020).

Almost surely, 2^{1000000223221} is an apocalyptic number.

It is an amenable number.

1000000223221 is a deficient number, since it is larger than the sum of its proper divisors (2358920939).

1000000223221 is a wasteful number, since it uses less digits than its factorization.

1000000223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229235.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 1000000223221 its reverse (1223220000001), we get a palindrome (2223220223222).

It can be divided in two parts, 1000000 and 223221, that added together give a palindrome (1223221).

The spelling of 1000000223221 in words is "one trillion, two hundred twenty-three thousand, two hundred twenty-one".