1131021023321 has 8 divisors (see below), whose sum is σ = 1292610030720. Its totient is φ = 969435659808.

The previous prime is 1131021023317. The next prime is 1131021023359. The reversal of 1131021023321 is 1233201201311.

It is a happy number.

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

It is not a de Polignac number, because 1131021023321 - 2² = 1131021023317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131021023293 and 1131021023302.

It is not an unprimeable number, because it can be changed into a prime (1131021023221) 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, 209876 + ... + 1518581.

It is an arithmetic number, because the mean of its divisors is an integer number (161576253840).

Almost surely, 2^{1131021023321} is an apocalyptic number.

It is an amenable number.

1131021023321 is a deficient number, since it is larger than the sum of its proper divisors (161589007399).

1131021023321 is an equidigital number, since it uses as much as digits as its factorization.

1131021023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821943.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1131021023321 its reverse (1233201201311), we get a palindrome (2364222224632).

The spelling of 1131021023321 in words is "one trillion, one hundred thirty-one billion, twenty-one million, twenty-three thousand, three hundred twenty-one".