223001220 has 96 divisors (see below), whose sum is σ = 690697728. Its totient is φ = 53402112.

The previous prime is 223001171. The next prime is 223001221. The reversal of 223001220 is 22100322.

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 = 223001196 and 223001205.

It is not an unprimeable number, because it can be changed into a prime (223001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24997 + ... + 32723.

It is an arithmetic number, because the mean of its divisors is an integer number (7194768).

Almost surely, 2^223001220 is an apocalyptic number.

223001220 is a gapful number since it is divisible by the number (20) 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 223001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345348864).

223001220 is an abundant number, since it is smaller than the sum of its proper divisors (467696508).

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

223001220 is a wasteful number, since it uses less digits than its factorization.

223001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7789 (or 7787 counting only the distinct ones).

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

The square root of 223001220 is about 14933.2253716336. The cubic root of 223001220 is about 606.4138053134.

Adding to 223001220 its reverse (22100322), we get a palindrome (245101542).

The spelling of 223001220 in words is "two hundred twenty-three million, one thousand, two hundred twenty".