1100231231321 has 8 divisors (see below), whose sum is σ = 1130912793864. Its totient is φ = 1069732842880.

The previous prime is 1100231231317. The next prime is 1100231231329. The reversal of 1100231231321 is 1231321320011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101952490000 + 998278741321 = 319300^2 + 999139^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1100231231321 - 2² = 1100231231317 is a prime.

It is a super-2 number, since 2×1100231231321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100231231293 and 1100231231302.

It is not an unprimeable number, because it can be changed into a prime (1100231231329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45781346 + ... + 45805371.

It is an arithmetic number, because the mean of its divisors is an integer number (141364099233).

Almost surely, 2^{1100231231321} is an apocalyptic number.

It is an amenable number.

1100231231321 is a deficient number, since it is larger than the sum of its proper divisors (30681562543).

1100231231321 is an equidigital number, since it uses as much as digits as its factorization.

1100231231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91587051.

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

Adding to 1100231231321 its reverse (1231321320011), we get a palindrome (2331552551332).

The spelling of 1100231231321 in words is "one trillion, one hundred billion, two hundred thirty-one million, two hundred thirty-one thousand, three hundred twenty-one".