10023123221 has 4 divisors (see below), whose sum is σ = 10099635744. Its totient is φ = 9946610700.

The previous prime is 10023123203. The next prime is 10023123239. The reversal of 10023123221 is 12232132001.

10023123221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (10023123203) and next prime (10023123239).

It is a cyclic number.

It is not a de Polignac number, because 10023123221 - 2⁶ = 10023123157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10023123221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10023123281) 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 in 3 ways as a sum of consecutive naturals, for example, 38256065 + ... + 38256326.

It is an arithmetic number, because the mean of its divisors is an integer number (2524908936).

Almost surely, 2^10023123221 is an apocalyptic number.

It is an amenable number.

10023123221 is a deficient number, since it is larger than the sum of its proper divisors (76512523).

10023123221 is an equidigital number, since it uses as much as digits as its factorization.

10023123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76512522.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10023123221 its reverse (12232132001), we get a palindrome (22255255222).

The spelling of 10023123221 in words is "ten billion, twenty-three million, one hundred twenty-three thousand, two hundred twenty-one".