22022003021 has 2 divisors, whose sum is σ = 22022003022. Its totient is φ = 22022003020.

The previous prime is 22022003011. The next prime is 22022003033. The reversal of 22022003021 is 12030022022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21966500521 + 55502500 = 148211^2 + 7450^2 .

It is a cyclic number.

It is not a de Polignac number, because 22022003021 - 2¹⁸ = 22021740877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22022002987 and 22022003005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22022003011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011001510 + 11011001511.

It is an arithmetic number, because the mean of its divisors is an integer number (11011001511).

Almost surely, 2^22022003021 is an apocalyptic number.

It is an amenable number.

22022003021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022003021 is an equidigital number, since it uses as much as digits as its factorization.

22022003021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 22022003021 its reverse (12030022022), we get a palindrome (34052025043).

The spelling of 22022003021 in words is "twenty-two billion, twenty-two million, three thousand, twenty-one".