222230520 has 128 divisors (see below), whose sum is σ = 746280000. Its totient is φ = 58821120.

The previous prime is 222230513. The next prime is 222230527. The reversal of 222230520 is 25032222.

It is an interprime number because it is at equal distance from previous prime (222230513) and next prime (222230527).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222230493 and 222230502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222230527) 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, 160230 + ... + 161610.

Almost surely, 2^222230520 is an apocalyptic number.

222230520 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 222230520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373140000).

222230520 is an abundant number, since it is smaller than the sum of its proper divisors (524049480).

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

222230520 is a wasteful number, since it uses less digits than its factorization.

222230520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 222230520 is about 14907.3981633282. The cubic root of 222230520 is about 605.7144032150.

Adding to 222230520 its reverse (25032222), we get a palindrome (247262742).

The spelling of 222230520 in words is "two hundred twenty-two million, two hundred thirty thousand, five hundred twenty".