33121004 has 12 divisors (see below), whose sum is σ = 66242064. Its totient is φ = 14194704.

The previous prime is 33121001. The next prime is 33121027. The reversal of 33121004 is 40012133.

33121004 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 33121004.

It is not an unprimeable number, because it can be changed into a prime (33121001) 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, 591419 + ... + 591474.

It is an arithmetic number, because the mean of its divisors is an integer number (5520172).

Almost surely, 2^33121004 is an apocalyptic number.

It is an amenable number.

33121004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33121004 is a wasteful number, since it uses less digits than its factorization.

33121004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182904 (or 1182902 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 33121004 is about 5755.0850558441. The cubic root of 33121004 is about 321.1449997249.

Adding to 33121004 its reverse (40012133), we get a palindrome (73133137).

The spelling of 33121004 in words is "thirty-three million, one hundred twenty-one thousand, four".