33136121 has 4 divisors (see below), whose sum is σ = 33200244. Its totient is φ = 33072000.

The previous prime is 33136093. The next prime is 33136151. The reversal of 33136121 is 12163133.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20611600 + 12524521 = 4540^2 + 3539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33136121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33136093 and 33136102.

It is not an unprimeable number, because it can be changed into a prime (33136151) 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, 31280 + ... + 32321.

It is an arithmetic number, because the mean of its divisors is an integer number (8300061).

Almost surely, 2^33136121 is an apocalyptic number.

It is an amenable number.

33136121 is a deficient number, since it is larger than the sum of its proper divisors (64123).

33136121 is an equidigital number, since it uses as much as digits as its factorization.

33136121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64122.

The product of its digits is 324, while the sum is 20.

The square root of 33136121 is about 5756.3982662773. The cubic root of 33136121 is about 321.1938510072.

Adding to 33136121 its reverse (12163133), we get a palindrome (45299254).

The spelling of 33136121 in words is "thirty-three million, one hundred thirty-six thousand, one hundred twenty-one".