1000021221224 has 16 divisors (see below), whose sum is σ = 1879089558720. Its totient is φ = 498930672240.

The previous prime is 1000021221197. The next prime is 1000021221289. The reversal of 1000021221224 is 4221221200001.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 134988362 + ... + 134995769.

It is an arithmetic number, because the mean of its divisors is an integer number (117443097420).

Almost surely, 2^{1000021221224} is an apocalyptic number.

It is an amenable number.

1000021221224 is a deficient number, since it is larger than the sum of its proper divisors (879068337496).

1000021221224 is a wasteful number, since it uses less digits than its factorization.

1000021221224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269984600 (or 269984596 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1000021221224 its reverse (4221221200001), we get a palindrome (5221242421225).

The spelling of 1000021221224 in words is "one trillion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-four".