33011121 has 16 divisors (see below), whose sum is σ = 51710400. Its totient is φ = 18467520.

The previous prime is 33011117. The next prime is 33011123. The reversal of 33011121 is 12111033.

It is not a de Polignac number, because 33011121 - 2² = 33011117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33011097 and 33011106.

It is not an unprimeable number, because it can be changed into a prime (33011123) 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 15 ways as a sum of consecutive naturals, for example, 38046 + ... + 38903.

It is an arithmetic number, because the mean of its divisors is an integer number (3231900).

Almost surely, 2^33011121 is an apocalyptic number.

It is an amenable number.

33011121 is a deficient number, since it is larger than the sum of its proper divisors (18699279).

33011121 is a wasteful number, since it uses less digits than its factorization.

33011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76976.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 33011121 is about 5745.5305238072. The cubic root of 33011121 is about 320.7894602551.

Adding to 33011121 its reverse (12111033), we get a palindrome (45122154).

The spelling of 33011121 in words is "thirty-three million, eleven thousand, one hundred twenty-one".