33545403121 has 4 divisors (see below), whose sum is σ = 33549159744. Its totient is φ = 33541646500.

The previous prime is 33545403077. The next prime is 33545403161. The reversal of 33545403121 is 12130454533.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12130454533 = 17 ⋅713556149.

It is a cyclic number.

It is not a de Polignac number, because 33545403121 - 2¹¹ = 33545401073 is a prime.

It is a super-2 number, since 2×33545403121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33545403161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1864885 + ... + 1882786.

It is an arithmetic number, because the mean of its divisors is an integer number (8387289936).

Almost surely, 2^33545403121 is an apocalyptic number.

It is an amenable number.

33545403121 is a deficient number, since it is larger than the sum of its proper divisors (3756623).

33545403121 is an equidigital number, since it uses as much as digits as its factorization.

33545403121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756622.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 33545403121 its reverse (12130454533), we get a palindrome (45675857654).

The spelling of 33545403121 in words is "thirty-three billion, five hundred forty-five million, four hundred three thousand, one hundred twenty-one".