33123122121 has 4 divisors (see below), whose sum is σ = 44164162832. Its totient is φ = 22082081412.

The previous prime is 33123122101. The next prime is 33123122173. The reversal of 33123122121 is 12122132133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 33123122121 - 2¹¹ = 33123120073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33123122101) 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, 5520520351 + ... + 5520520356.

It is an arithmetic number, because the mean of its divisors is an integer number (11041040708).

Almost surely, 2^33123122121 is an apocalyptic number.

It is an amenable number.

33123122121 is a deficient number, since it is larger than the sum of its proper divisors (11041040711).

33123122121 is a wasteful number, since it uses less digits than its factorization.

33123122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11041040710.

The product of its digits is 432, while the sum is 21.

Adding to 33123122121 its reverse (12122132133), we get a palindrome (45245254254).

The spelling of 33123122121 in words is "thirty-three billion, one hundred twenty-three million, one hundred twenty-two thousand, one hundred twenty-one".