1121001123321 has 56 divisors (see below), whose sum is σ = 1744885879560. Its totient is φ = 718992288000.

The previous prime is 1121001123317. The next prime is 1121001123377. The reversal of 1121001123321 is 1233211001211.

1121001123321 is a `hidden beast` number, since 11 + 210 + 0 + 1 + 123 + 321 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 454714205625 + 666286917696 = 674325^2 + 816264^2 .

It is not a de Polignac number, because 1121001123321 - 2² = 1121001123317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1121001123294 and 1121001123303.

It is not an unprimeable number, because it can be changed into a prime (1121001123821) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5846271 + ... + 6034971.

Almost surely, 2^{1121001123321} is an apocalyptic number.

It is an amenable number.

1121001123321 is a deficient number, since it is larger than the sum of its proper divisors (623884756239).

1121001123321 is an equidigital number, since it uses as much as digits as its factorization.

1121001123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189029 (or 189014 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1121001123321 its reverse (1233211001211), we get a palindrome (2354212124532).

The spelling of 1121001123321 in words is "one trillion, one hundred twenty-one billion, one million, one hundred twenty-three thousand, three hundred twenty-one".