22322021 has 2 divisors, whose sum is σ = 22322022. Its totient is φ = 22322020.

The previous prime is 22322011. The next prime is 22322023. The reversal of 22322021 is 12022322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11464996 + 10857025 = 3386^2 + 3295^2 .

It is a cyclic number.

It is not a de Polignac number, because 22322021 - 2²² = 18127717 is a prime.

It is a super-3 number, since 3×22322021³ (a number of 23 digits) contains 333 as substring.

Together with 22322023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22321987 and 22322005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22322023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11161010 + 11161011.

It is an arithmetic number, because the mean of its divisors is an integer number (11161011).

Almost surely, 2^22322021 is an apocalyptic number.

It is an amenable number.

22322021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22322021 is an equidigital number, since it uses as much as digits as its factorization.

22322021 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.

The square root of 22322021 is about 4724.6186089461. The cubic root of 22322021 is about 281.5644610488.

Adding to 22322021 its reverse (12022322), we get a palindrome (34344343).

The spelling of 22322021 in words is "twenty-two million, three hundred twenty-two thousand, twenty-one".