33121081 has 8 divisors (see below), whose sum is σ = 39498624. Its totient is φ = 27155040.

The previous prime is 33121073. The next prime is 33121087. The reversal of 33121081 is 18012133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33121081 - 2³ = 33121073 is a prime.

It is a super-2 number, since 2×33121081² = 2194012013217122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33121087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102700 + ... + 103021.

It is an arithmetic number, because the mean of its divisors is an integer number (4937328).

Almost surely, 2^33121081 is an apocalyptic number.

It is an amenable number.

33121081 is a deficient number, since it is larger than the sum of its proper divisors (6377543).

33121081 is a wasteful number, since it uses less digits than its factorization.

33121081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205751.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 33121081 is about 5755.0917455763. The cubic root of 33121081 is about 321.1452485916.

It can be divided in two parts, 331 and 21081, that added together give a palindrome (21412).

The spelling of 33121081 in words is "thirty-three million, one hundred twenty-one thousand, eighty-one".