123330133321 has 4 divisors (see below), whose sum is σ = 123385664644. Its totient is φ = 123274602000.

The previous prime is 123330133319. The next prime is 123330133327. The reversal of 123330133321 is 123331033321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123331033321 = 19483 ⋅6330187.

It can be written as a sum of positive squares in 2 ways, for example, as 100005207696 + 23324925625 = 316236^2 + 152725^2 .

It is a cyclic number.

It is not a de Polignac number, because 123330133321 - 2¹ = 123330133319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123330133327) 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, 27762330 + ... + 27766771.

It is an arithmetic number, because the mean of its divisors is an integer number (30846416161).

Almost surely, 2^123330133321 is an apocalyptic number.

It is an amenable number.

123330133321 is a deficient number, since it is larger than the sum of its proper divisors (55531323).

123330133321 is an equidigital number, since it uses as much as digits as its factorization.

123330133321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55531322.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 123330133321 its reverse (123331033321), we get a palindrome (246661166642).

The spelling of 123330133321 in words is "one hundred twenty-three billion, three hundred thirty million, one hundred thirty-three thousand, three hundred twenty-one".