1000021220222 has 8 divisors (see below), whose sum is σ = 1500437584416. Its totient is φ = 499875358752.

The previous prime is 1000021220189. The next prime is 1000021220227. The reversal of 1000021220222 is 2220221200001.

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

It is a junction number, because it is equal to n+sod(n) for n = 1000021220197 and 1000021220206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000021220227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67616438 + ... + 67631225.

It is an arithmetic number, because the mean of its divisors is an integer number (187554698052).

Almost surely, 2^{1000021220222} is an apocalyptic number.

1000021220222 is a deficient number, since it is larger than the sum of its proper divisors (500416364194).

1000021220222 is a wasteful number, since it uses less digits than its factorization.

1000021220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135251362.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1000021220222 its reverse (2220221200001), we get a palindrome (3220242420223).

The spelling of 1000021220222 in words is "one trillion, twenty-one million, two hundred twenty thousand, two hundred twenty-two".