1121231332311 has 4 divisors (see below), whose sum is σ = 1494975109752. Its totient is φ = 747487554872.

The previous prime is 1121231332289. The next prime is 1121231332313. The reversal of 1121231332311 is 1132331321211.

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 1121231332311 - 2²³ = 1121222943703 is a prime.

It is a super-2 number, since 2×1121231332311² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121231332313) 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, 186871888716 + ... + 186871888721.

It is an arithmetic number, because the mean of its divisors is an integer number (373743777438).

Almost surely, 2^{1121231332311} is an apocalyptic number.

1121231332311 is a deficient number, since it is larger than the sum of its proper divisors (373743777441).

1121231332311 is an equidigital number, since it uses as much as digits as its factorization.

1121231332311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373743777440.

The product of its digits is 648, while the sum is 24.

Adding to 1121231332311 its reverse (1132331321211), we get a palindrome (2253562653522).

The spelling of 1121231332311 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred eleven".