33641343121 has 4 divisors (see below), whose sum is σ = 34046660592. Its totient is φ = 33236025652.

The previous prime is 33641343097. The next prime is 33641343137. The reversal of 33641343121 is 12134314633.

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 33641343121 - 2¹¹ = 33641341073 is a prime.

It is a super-2 number, since 2×33641343121² (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 (33641343181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202658611 + ... + 202658776.

It is an arithmetic number, because the mean of its divisors is an integer number (8511665148).

Almost surely, 2^33641343121 is an apocalyptic number.

It is an amenable number.

33641343121 is a deficient number, since it is larger than the sum of its proper divisors (405317471).

33641343121 is an equidigital number, since it uses as much as digits as its factorization.

33641343121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405317470.

The product of its digits is 15552, while the sum is 31.

Adding to 33641343121 its reverse (12134314633), we get a palindrome (45775657754).

The spelling of 33641343121 in words is "thirty-three billion, six hundred forty-one million, three hundred forty-three thousand, one hundred twenty-one".