1223111005 has 8 divisors (see below), whose sum is σ = 1492610400. Its totient is φ = 961904016.

The previous prime is 1223111003. The next prime is 1223111009. The reversal of 1223111005 is 5001113221.

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

It is a cyclic number.

It is not a de Polignac number, because 1223111005 - 2¹ = 1223111003 is a prime.

It is a super-2 number, since 2×1223111005² = 2992001061104220050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1223111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223111003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2072775 + ... + 2073364.

It is an arithmetic number, because the mean of its divisors is an integer number (186576300).

Almost surely, 2^1223111005 is an apocalyptic number.

It is an amenable number.

1223111005 is a deficient number, since it is larger than the sum of its proper divisors (269499395).

1223111005 is an equidigital number, since it uses as much as digits as its factorization.

1223111005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4146203.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1223111005 is about 34973.0039459009. The cubic root of 1223111005 is about 1069.4372109559.

Adding to 1223111005 its reverse (5001113221), we get a palindrome (6224224226).

The spelling of 1223111005 in words is "one billion, two hundred twenty-three million, one hundred eleven thousand, five".