33123132121 has 16 divisors (see below), whose sum is σ = 34653640320. Its totient is φ = 31636874880.

The previous prime is 33123132089. The next prime is 33123132137. The reversal of 33123132121 is 12123132133.

It is a cyclic number.

It is not a de Polignac number, because 33123132121 - 2⁵ = 33123132089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33123132092 and 33123132101.

It is not an unprimeable number, because it can be changed into a prime (33123136121) 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, 270661 + ... + 373501.

It is an arithmetic number, because the mean of its divisors is an integer number (2165852520).

Almost surely, 2^33123132121 is an apocalyptic number.

It is an amenable number.

33123132121 is a deficient number, since it is larger than the sum of its proper divisors (1530508199).

33123132121 is a wasteful number, since it uses less digits than its factorization.

33123132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103056.

The product of its digits is 648, while the sum is 22.

Adding to 33123132121 its reverse (12123132133), we get a palindrome (45246264254).

The spelling of 33123132121 in words is "thirty-three billion, one hundred twenty-three million, one hundred thirty-two thousand, one hundred twenty-one".