1223220318 has 8 divisors (see below), whose sum is σ = 2446440648. Its totient is φ = 407740104.

The previous prime is 1223220311. The next prime is 1223220331. The reversal of 1223220318 is 8130223221.

It is a happy number.

1223220318 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

1223220318 is an admirable number.

It is a super-2 number, since 2×1223220318² = 2992535892736042248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223220311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101935021 + ... + 101935032.

It is an arithmetic number, because the mean of its divisors is an integer number (305805081).

Almost surely, 2^1223220318 is an apocalyptic number.

1223220318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1223220318 is a wasteful number, since it uses less digits than its factorization.

1223220318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203870058.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1223220318 is about 34974.5667306973. The cubic root of 1223220318 is about 1069.4690695816.

Adding to 1223220318 its reverse (8130223221), we get a palindrome (9353443539).

The spelling of 1223220318 in words is "one billion, two hundred twenty-three million, two hundred twenty thousand, three hundred eighteen".