1131211233321 has 16 divisors (see below), whose sum is σ = 1640385526080. Its totient is φ = 689237611200.

The previous prime is 1131211233293. The next prime is 1131211233331. The reversal of 1131211233321 is 1233321121311.

It is not a de Polignac number, because 1131211233321 - 2³⁴ = 1114031364137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131211233291 and 1131211233300.

It is not an unprimeable number, because it can be changed into a prime (1131211233331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143587231 + ... + 143595108.

It is an arithmetic number, because the mean of its divisors is an integer number (102524095380).

Almost surely, 2^{1131211233321} is an apocalyptic number.

It is an amenable number.

1131211233321 is a deficient number, since it is larger than the sum of its proper divisors (509174292759).

1131211233321 is a wasteful number, since it uses less digits than its factorization.

1131211233321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287182456.

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

Adding to 1131211233321 its reverse (1233321121311), we get a palindrome (2364532354632).

The spelling of 1131211233321 in words is "one trillion, one hundred thirty-one billion, two hundred eleven million, two hundred thirty-three thousand, three hundred twenty-one".