10001223 has 6 divisors (see below), whose sum is σ = 14446224. Its totient is φ = 6667476.

The previous prime is 10001221. The next prime is 10001227. The reversal of 10001223 is 32210001.

It is a happy number.

10001223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10001223 - 2¹ = 10001221 is a prime.

It is a super-2 number, since 2×10001223² = 200048922991458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1111247 = 10001223 / (1 + 0 + 0 + 0 + 1 + 2 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555615 + ... + 555632.

It is an arithmetic number, because the mean of its divisors is an integer number (2407704).

Almost surely, 2^10001223 is an apocalyptic number.

10001223 is a deficient number, since it is larger than the sum of its proper divisors (4445001).

10001223 is a wasteful number, since it uses less digits than its factorization.

10001223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111253 (or 1111250 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 10001223 is about 3162.4710275353. The cubic root of 10001223 is about 215.4522515572.

Adding to 10001223 its reverse (32210001), we get a palindrome (42211224).

The spelling of 10001223 in words is "ten million, one thousand, two hundred twenty-three".