22210030223021 has 2 divisors, whose sum is σ = 22210030223022. Its totient is φ = 22210030223020.

The previous prime is 22210030222997. The next prime is 22210030223023. The reversal of 22210030223021 is 12032203001222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22174963540900 + 35066682121 = 4709030^2 + 187261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22210030223021 is a prime.

It is a Sophie Germain prime.

Together with 22210030223023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22210030222984 and 22210030223002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22210030223023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105015111510 + 11105015111511.

It is an arithmetic number, because the mean of its divisors is an integer number (11105015111511).

Almost surely, 2^{22210030223021} is an apocalyptic number.

It is an amenable number.

22210030223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210030223021 is an equidigital number, since it uses as much as digits as its factorization.

22210030223021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22210030223021 its reverse (12032203001222), we get a palindrome (34242233224243).

The spelling of 22210030223021 in words is "twenty-two trillion, two hundred ten billion, thirty million, two hundred twenty-three thousand, twenty-one".