10223220 has 96 divisors (see below), whose sum is σ = 33175296. Its totient is φ = 2304000.

The previous prime is 10223209. The next prime is 10223221. The reversal of 10223220 is 2232201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10223196 and 10223205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10223221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42300 + ... + 42540.

It is an arithmetic number, because the mean of its divisors is an integer number (345576).

Almost surely, 2^10223220 is an apocalyptic number.

10223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10223220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16587648).

10223220 is an abundant number, since it is smaller than the sum of its proper divisors (22952076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10223220 is a wasteful number, since it uses less digits than its factorization.

10223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 10223220 is about 3197.3770500208. The cubic root of 10223220 is about 217.0347300837.

Adding to 10223220 its reverse (2232201), we get a palindrome (12455421).

The spelling of 10223220 in words is "ten million, two hundred twenty-three thousand, two hundred twenty".