1123211311311 has 8 divisors (see below), whose sum is σ = 1505374746160. Its totient is φ = 744927708672.

The previous prime is 1123211311309. The next prime is 1123211311351. The reversal of 1123211311311 is 1131131123211.

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

It is not a de Polignac number, because 1123211311311 - 2¹ = 1123211311309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123211311351) 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 7 ways as a sum of consecutive naturals, for example, 969957376 + ... + 969958533.

It is an arithmetic number, because the mean of its divisors is an integer number (188171843270).

Almost surely, 2^{1123211311311} is an apocalyptic number.

1123211311311 is a deficient number, since it is larger than the sum of its proper divisors (382163434849).

1123211311311 is a wasteful number, since it uses less digits than its factorization.

1123211311311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939916105.

The product of its digits is 108, while the sum is 21.

Adding to 1123211311311 its reverse (1131131123211), we get a palindrome (2254342434522).

The spelling of 1123211311311 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, three hundred eleven thousand, three hundred eleven".