10123221 has 4 divisors (see below), whose sum is σ = 13497632. Its totient is φ = 6748812.

The previous prime is 10123207. The next prime is 10123241. The reversal of 10123221 is 12232101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10123221 - 2⁷ = 10123093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10123197 and 10123206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687201 + ... + 1687206.

It is an arithmetic number, because the mean of its divisors is an integer number (3374408).

Almost surely, 2^10123221 is an apocalyptic number.

It is an amenable number.

10123221 is a deficient number, since it is larger than the sum of its proper divisors (3374411).

10123221 is an equidigital number, since it uses as much as digits as its factorization.

10123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374410.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 10123221 is about 3181.7009601784. The cubic root of 10123221 is about 216.3247643744.

Adding to 10123221 its reverse (12232101), we get a palindrome (22355322).

The spelling of 10123221 in words is "ten million, one hundred twenty-three thousand, two hundred twenty-one".