1123223201321 has 4 divisors (see below), whose sum is σ = 1209624986052. Its totient is φ = 1036821416592.

The previous prime is 1123223201281. The next prime is 1123223201327. The reversal of 1123223201321 is 1231023223211.

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 415462750096 + 707760451225 = 644564^2 + 841285^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1123223201321 is a prime.

It is a super-3 number, since 3×1123223201321³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123223201327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43200892346 + ... + 43200892371.

It is an arithmetic number, because the mean of its divisors is an integer number (302406246513).

Almost surely, 2^{1123223201321} is an apocalyptic number.

It is an amenable number.

1123223201321 is a deficient number, since it is larger than the sum of its proper divisors (86401784731).

1123223201321 is an equidigital number, since it uses as much as digits as its factorization.

1123223201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86401784730.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1123223201321 its reverse (1231023223211), we get a palindrome (2354246424532).

The spelling of 1123223201321 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-three million, two hundred one thousand, three hundred twenty-one".