10223021 has 2 divisors, whose sum is σ = 10223022. Its totient is φ = 10223020.

The previous prime is 10223009. The next prime is 10223023. The reversal of 10223021 is 12032201.

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., 7022500 + 3200521 = 2650^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 10223021 - 2⁶ = 10222957 is a prime.

Together with 10223023, 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 = 10222993 and 10223011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10223023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5111510 + 5111511.

It is an arithmetic number, because the mean of its divisors is an integer number (5111511).

Almost surely, 2^10223021 is an apocalyptic number.

It is an amenable number.

10223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10223021 is an equidigital number, since it uses as much as digits as its factorization.

10223021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 10223021 is about 3197.3459306118. The cubic root of 10223021 is about 217.0333218454.

Adding to 10223021 its reverse (12032201), we get a palindrome (22255222).

The spelling of 10223021 in words is "ten million, two hundred twenty-three thousand, twenty-one".