1223311033211 has 4 divisors (see below), whose sum is σ = 1223459844624. Its totient is φ = 1223162221800.

The previous prime is 1223311033193. The next prime is 1223311033279. The reversal of 1223311033211 is 1123301133221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223311033211 - 2¹⁴ = 1223311016827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223311023211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74393375 + ... + 74409816.

It is an arithmetic number, because the mean of its divisors is an integer number (305864961156).

Almost surely, 2^{1223311033211} is an apocalyptic number.

1223311033211 is a deficient number, since it is larger than the sum of its proper divisors (148811413).

1223311033211 is an equidigital number, since it uses as much as digits as its factorization.

1223311033211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148811412.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1223311033211 its reverse (1123301133221), we get a palindrome (2346612166432).

The spelling of 1223311033211 in words is "one trillion, two hundred twenty-three billion, three hundred eleven million, thirty-three thousand, two hundred eleven".