1123211001311 has 16 divisors (see below), whose sum is σ = 1323549435648. Its totient is φ = 933184324800.

The previous prime is 1123211001299. The next prime is 1123211001313. The reversal of 1123211001311 is 1131001123211.

It is a de Polignac number, because none of the positive numbers 2^k-1123211001311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123211001311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123211001313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14203310 + ... + 14282171.

It is an arithmetic number, because the mean of its divisors is an integer number (82721839728).

Almost surely, 2^{1123211001311} is an apocalyptic number.

1123211001311 is a deficient number, since it is larger than the sum of its proper divisors (200338434337).

1123211001311 is a wasteful number, since it uses less digits than its factorization.

1123211001311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28485662.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1123211001311 its reverse (1131001123211), we get a palindrome (2254212124522).

The spelling of 1123211001311 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, one thousand, three hundred eleven".