20210221321222 has 16 divisors (see below), whose sum is σ = 30628688151600. Its totient is φ = 10000664229888.

The previous prime is 20210221321211. The next prime is 20210221321243. The reversal of 20210221321222 is 22212312201202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20210221321193 and 20210221321202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5894529 + ... + 8669827.

It is an arithmetic number, because the mean of its divisors is an integer number (1914293009475).

Almost surely, 2^{20210221321222} is an apocalyptic number.

20210221321222 is a deficient number, since it is larger than the sum of its proper divisors (10418466830378).

20210221321222 is a wasteful number, since it uses less digits than its factorization.

20210221321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812935.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20210221321222 its reverse (22212312201202), we get a palindrome (42422533522424).

The spelling of 20210221321222 in words is "twenty trillion, two hundred ten billion, two hundred twenty-one million, three hundred twenty-one thousand, two hundred twenty-two".