13123221033 has 8 divisors (see below), whose sum is σ = 18843599488. Its totient is φ = 8075828304.

The previous prime is 13123221019. The next prime is 13123221049. The reversal of 13123221033 is 33012232131.

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

It is not a de Polignac number, because 13123221033 - 2⁸ = 13123220777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13123228033) 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, 168246385 + ... + 168246462.

It is an arithmetic number, because the mean of its divisors is an integer number (2355449936).

Almost surely, 2^13123221033 is an apocalyptic number.

13123221033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13123221033 is a deficient number, since it is larger than the sum of its proper divisors (5720378455).

13123221033 is a wasteful number, since it uses less digits than its factorization.

13123221033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336492863.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13123221033 its reverse (33012232131), we get a palindrome (46135453164).

The spelling of 13123221033 in words is "thirteen billion, one hundred twenty-three million, two hundred twenty-one thousand, thirty-three".