1011321241321 has 4 divisors (see below), whose sum is σ = 1011349421892. Its totient is φ = 1011293060752.

The previous prime is 1011321241283. The next prime is 1011321241367. The reversal of 1011321241321 is 1231421231101.

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 655717735696 + 355603505625 = 809764^2 + 596325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011321241321 - 2²⁷ = 1011187023593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011321241292 and 1011321241301.

It is not an unprimeable number, because it can be changed into a prime (1011321241621) 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, 14036386 + ... + 14108251.

It is an arithmetic number, because the mean of its divisors is an integer number (252837355473).

Almost surely, 2^{1011321241321} is an apocalyptic number.

It is an amenable number.

1011321241321 is a deficient number, since it is larger than the sum of its proper divisors (28180571).

1011321241321 is an equidigital number, since it uses as much as digits as its factorization.

1011321241321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28180570.

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

Adding to 1011321241321 its reverse (1231421231101), we get a palindrome (2242742472422).

The spelling of 1011321241321 in words is "one trillion, eleven billion, three hundred twenty-one million, two hundred forty-one thousand, three hundred twenty-one".