1223345667777 has 4 divisors (see below), whose sum is σ = 1631127557040. Its totient is φ = 815563778516.

The previous prime is 1223345667737. The next prime is 1223345667833. The reversal of 1223345667777 is 7777665433221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1223345667777 - 2²⁴ = 1223328890561 is a prime.

It is a super-2 number, since 2×1223345667777² (a number of 25 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1223345667777.

It is not an unprimeable number, because it can be changed into a prime (1223345667737) 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, 203890944627 + ... + 203890944632.

It is an arithmetic number, because the mean of its divisors is an integer number (407781889260).

Almost surely, 2^{1223345667777} is an apocalyptic number.

It is an amenable number.

1223345667777 is a deficient number, since it is larger than the sum of its proper divisors (407781889263).

1223345667777 is an equidigital number, since it uses as much as digits as its factorization.

1223345667777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407781889262.

The product of its digits is 62233920, while the sum is 60.

The spelling of 1223345667777 in words is "one trillion, two hundred twenty-three billion, three hundred forty-five million, six hundred sixty-seven thousand, seven hundred seventy-seven".