1311033223111 has 4 divisors (see below), whose sum is σ = 1311319292112. Its totient is φ = 1310747154112.

The previous prime is 1311033223081. The next prime is 1311033223187. The reversal of 1311033223111 is 1113223301131.

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 1311033223111 - 2²¹ = 1311031125959 is a prime.

It is a super-2 number, since 2×1311033223111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311003223111) 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, 143027626 + ... + 143036791.

It is an arithmetic number, because the mean of its divisors is an integer number (327829823028).

Almost surely, 2^{1311033223111} is an apocalyptic number.

1311033223111 is a deficient number, since it is larger than the sum of its proper divisors (286069001).

1311033223111 is an equidigital number, since it uses as much as digits as its factorization.

1311033223111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286069000.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1311033223111 its reverse (1113223301131), we get a palindrome (2424256524242).

The spelling of 1311033223111 in words is "one trillion, three hundred eleven billion, thirty-three million, two hundred twenty-three thousand, one hundred eleven".