1223455667 has 6 divisors (see below), whose sum is σ = 1423203588. Its totient is φ = 1048676244.

The previous prime is 1223455663. The next prime is 1223455679. The reversal of 1223455667 is 7665543221.

It is not a de Polignac number, because 1223455667 - 2² = 1223455663 is a prime.

It is a super-2 number, since 2×1223455667² = 2993687538228829778, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1223455663) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 12484193 + ... + 12484290.

It is an arithmetic number, because the mean of its divisors is an integer number (237200598).

Almost surely, 2^1223455667 is an apocalyptic number.

1223455667 is a deficient number, since it is larger than the sum of its proper divisors (199747921).

1223455667 is an equidigital number, since it uses as much as digits as its factorization.

1223455667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24968497 (or 24968490 counting only the distinct ones).

The product of its digits is 302400, while the sum is 41.

The square root of 1223455667 is about 34977.9311423646. The cubic root of 1223455667 is about 1069.5376542107.

Adding to 1223455667 its reverse (7665543221), we get a palindrome (8888998888).

The spelling of 1223455667 in words is "one billion, two hundred twenty-three million, four hundred fifty-five thousand, six hundred sixty-seven".