22022002021 has 8 divisors (see below), whose sum is σ = 22265362944. Its totient is φ = 21779336640.

The previous prime is 22022002007. The next prime is 22022002031. The reversal of 22022002021 is 12020022022.

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 22022002021 - 2⁷ = 22022001893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22022001992 and 22022002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022002031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110085 + ... + 236986.

It is an arithmetic number, because the mean of its divisors is an integer number (2783170368).

Almost surely, 2^22022002021 is an apocalyptic number.

It is an amenable number.

22022002021 is a deficient number, since it is larger than the sum of its proper divisors (243360923).

22022002021 is a wasteful number, since it uses less digits than its factorization.

22022002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347771.

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

Adding to 22022002021 its reverse (12020022022), we get a palindrome (34042024043).

The spelling of 22022002021 in words is "twenty-two billion, twenty-two million, two thousand, twenty-one".