1223864316811 has 4 divisors (see below), whose sum is σ = 1223967756712. Its totient is φ = 1223760876912.

The previous prime is 1223864316803. The next prime is 1223864316841. The reversal of 1223864316811 is 1186134683221.

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 1223864316811 - 2³ = 1223864316803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223864316841) 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, 51702201 + ... + 51725866.

It is an arithmetic number, because the mean of its divisors is an integer number (305991939178).

Almost surely, 2^{1223864316811} is an apocalyptic number.

1223864316811 is a deficient number, since it is larger than the sum of its proper divisors (103439901).

1223864316811 is a wasteful number, since it uses less digits than its factorization.

1223864316811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103439900.

The product of its digits is 331776, while the sum is 46.

The spelling of 1223864316811 in words is "one trillion, two hundred twenty-three billion, eight hundred sixty-four million, three hundred sixteen thousand, eight hundred eleven".