1321033123123 has 16 divisors (see below), whose sum is σ = 1514846995200. Its totient is φ = 1128493830816.

The previous prime is 1321033123099. The next prime is 1321033123129. The reversal of 1321033123123 is 3213213301231.

It is a cyclic number.

It is not a de Polignac number, because 1321033123123 - 2¹⁷ = 1321032992051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321033123129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21293553 + ... + 21355501.

It is an arithmetic number, because the mean of its divisors is an integer number (94677937200).

Almost surely, 2^{1321033123123} is an apocalyptic number.

1321033123123 is a deficient number, since it is larger than the sum of its proper divisors (193813872077).

1321033123123 is an equidigital number, since it uses as much as digits as its factorization.

1321033123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72186.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1321033123123 its reverse (3213213301231), we get a palindrome (4534246424354).

The spelling of 1321033123123 in words is "one trillion, three hundred twenty-one billion, thirty-three million, one hundred twenty-three thousand, one hundred twenty-three".