22022001021 has 8 divisors (see below), whose sum is σ = 29576994624. Its totient is φ = 14574170720.

The previous prime is 22022001019. The next prime is 22022001047. The reversal of 22022001021 is 12010022022.

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 22022001021 - 2¹ = 22022001019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22022000988 and 22022001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022003021) 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, 26790345 + ... + 26791166.

It is an arithmetic number, because the mean of its divisors is an integer number (3697124328).

Almost surely, 2^22022001021 is an apocalyptic number.

It is an amenable number.

22022001021 is a deficient number, since it is larger than the sum of its proper divisors (7554993603).

22022001021 is a wasteful number, since it uses less digits than its factorization.

22022001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53581651.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22022001021 its reverse (12010022022), we get a palindrome (34032023043).

The spelling of 22022001021 in words is "twenty-two billion, twenty-two million, one thousand, twenty-one".