1223356668 has 24 divisors (see below), whose sum is σ = 2855097168. Its totient is φ = 407700096.

The previous prime is 1223356649. The next prime is 1223356697. The reversal of 1223356668 is 8666533221.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79230 + ... + 93402.

It is an arithmetic number, because the mean of its divisors is an integer number (118962382).

Almost surely, 2^1223356668 is an apocalyptic number.

It is an amenable number.

1223356668 is an abundant number, since it is smaller than the sum of its proper divisors (1631740500).

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

1223356668 is a wasteful number, since it uses less digits than its factorization.

1223356668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21373 (or 21371 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 1223356668 is about 34976.5159499914. The cubic root of 1223356668 is about 1069.5088053206.

Adding to 1223356668 its reverse (8666533221), we get a palindrome (9889889889).

The spelling of 1223356668 in words is "one billion, two hundred twenty-three million, three hundred fifty-six thousand, six hundred sixty-eight".