22000222021 has 8 divisors (see below), whose sum is σ = 22918795200. Its totient is φ = 21099838560.

The previous prime is 22000222007. The next prime is 22000222031. The reversal of 22000222021 is 12022200022.

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 22000222021 - 2⁵ = 22000221989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22000221992 and 22000222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000222031) 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 7 ways as a sum of consecutive naturals, for example, 4544961 + ... + 4549798.

It is an arithmetic number, because the mean of its divisors is an integer number (2864849400).

Almost surely, 2^22000222021 is an apocalyptic number.

It is an amenable number.

22000222021 is a deficient number, since it is larger than the sum of its proper divisors (918573179).

22000222021 is an equidigital number, since it uses as much as digits as its factorization.

22000222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094859.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22000222021 its reverse (12022200022), we get a palindrome (34022422043).

The spelling of 22000222021 in words is "twenty-two billion, two hundred twenty-two thousand, twenty-one".