1132123221121 has 4 divisors (see below), whose sum is σ = 1132132393044. Its totient is φ = 1132114049200.

The previous prime is 1132123221113. The next prime is 1132123221133. The reversal of 1132123221121 is 1211223212311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 711052011121 + 421071210000 = 843239^2 + 648900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1132123221121 - 2³ = 1132123221113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1132123221092 and 1132123221101.

It is not an unprimeable number, because it can be changed into a prime (1132123221721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4398250 + ... + 4648531.

It is an arithmetic number, because the mean of its divisors is an integer number (283033098261).

Almost surely, 2^{1132123221121} is an apocalyptic number.

It is an amenable number.

1132123221121 is a deficient number, since it is larger than the sum of its proper divisors (9171923).

1132123221121 is an equidigital number, since it uses as much as digits as its factorization.

1132123221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9171922.

The product of its digits is 288, while the sum is 22.

Adding to 1132123221121 its reverse (1211223212311), we get a palindrome (2343346433432).

It can be divided in two parts, 113212 and 3221121, that added together give a palindrome (3334333).

The spelling of 1132123221121 in words is "one trillion, one hundred thirty-two billion, one hundred twenty-three million, two hundred twenty-one thousand, one hundred twenty-one".