23221123 has 2 divisors, whose sum is σ = 23221124. Its totient is φ = 23221122.

The previous prime is 23221117. The next prime is 23221147. The reversal of 23221123 is 32112232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23221123 - 2⁵ = 23221091 is a prime.

It is a super-2 number, since 2×23221123² = 1078441106762258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23221097 and 23221106.

It is not a weakly prime, because it can be changed into another prime (23221103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610561 + 11610562.

It is an arithmetic number, because the mean of its divisors is an integer number (11610562).

Almost surely, 2^23221123 is an apocalyptic number.

23221123 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221123 is an equidigital number, since it uses as much as digits as its factorization.

23221123 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23221123 is about 4818.8300447308. The cubic root of 23221123 is about 285.2951615324.

Adding to 23221123 its reverse (32112232), we get a palindrome (55333355).

The spelling of 23221123 in words is "twenty-three million, two hundred twenty-one thousand, one hundred twenty-three".