1121320321121 has 32 divisors (see below), whose sum is σ = 1523688219648. Its totient is φ = 796826629440.

The previous prime is 1121320321063. The next prime is 1121320321127. The reversal of 1121320321121 is 1211230231211.

It is a cyclic number.

It is not a de Polignac number, because 1121320321121 - 2¹⁴ = 1121320304737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121320321093 and 1121320321102.

It is not an unprimeable number, because it can be changed into a prime (1121320321127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6665111 + ... + 6831276.

It is an arithmetic number, because the mean of its divisors is an integer number (47615256864).

Almost surely, 2^{1121320321121} is an apocalyptic number.

1121320321121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121320321121 is a deficient number, since it is larger than the sum of its proper divisors (402367898527).

1121320321121 is a wasteful number, since it uses less digits than its factorization.

1121320321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13496501.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1121320321121 its reverse (1211230231211), we get a palindrome (2332550552332).

It can be divided in two parts, 1121320 and 321121, that added together give a palindrome (1442441).

The spelling of 1121320321121 in words is "one trillion, one hundred twenty-one billion, three hundred twenty million, three hundred twenty-one thousand, one hundred twenty-one".