1222223345678 has 8 divisors (see below), whose sum is σ = 1892474857920. Its totient is φ = 591398393040.

The previous prime is 1222223345677. The next prime is 1222223345683. The reversal of 1222223345678 is 8765433222221.

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

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222223345677) 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, 9856639823 + ... + 9856639946.

It is an arithmetic number, because the mean of its divisors is an integer number (236559357240).

Almost surely, 2^{1222223345678} is an apocalyptic number.

1222223345678 is a deficient number, since it is larger than the sum of its proper divisors (670251512242).

1222223345678 is a wasteful number, since it uses less digits than its factorization.

1222223345678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19713279802.

The product of its digits is 1935360, while the sum is 47.

Adding to 1222223345678 its reverse (8765433222221), we get a palindrome (9987656567899).

The spelling of 1222223345678 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-three million, three hundred forty-five thousand, six hundred seventy-eight".