22023130021 has 2 divisors, whose sum is σ = 22023130022. Its totient is φ = 22023130020.

The previous prime is 22023130007. The next prime is 22023130037. The reversal of 22023130021 is 12003132022.

It is an a-pointer prime, because the next prime (22023130037) can be obtained adding 22023130021 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12558564225 + 9464565796 = 112065^2 + 97286^2 .

It is a cyclic number.

It is not a de Polignac number, because 22023130021 - 2¹³ = 22023121829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22023129977 and 22023130004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22023130621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011565010 + 11011565011.

It is an arithmetic number, because the mean of its divisors is an integer number (11011565011).

Almost surely, 2^22023130021 is an apocalyptic number.

It is an amenable number.

22023130021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22023130021 is an equidigital number, since it uses as much as digits as its factorization.

22023130021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 22023130021 its reverse (12003132022), we get a palindrome (34026262043).

The spelling of 22023130021 in words is "twenty-two billion, twenty-three million, one hundred thirty thousand, twenty-one".