33120121 has 8 divisors (see below), whose sum is σ = 34272000. Its totient is φ = 31973520.

The previous prime is 33120119. The next prime is 33120137. The reversal of 33120121 is 12102133.

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 33120121 - 2¹ = 33120119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33120421) 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, 14730 + ... + 16828.

It is an arithmetic number, because the mean of its divisors is an integer number (4284000).

Almost surely, 2^33120121 is an apocalyptic number.

33120121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

33120121 is a deficient number, since it is larger than the sum of its proper divisors (1151879).

33120121 is a wasteful number, since it uses less digits than its factorization.

33120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 33120121 is about 5755.0083405674. The cubic root of 33120121 is about 321.1421458102.

Adding to 33120121 its reverse (12102133), we get a palindrome (45222254).

The spelling of 33120121 in words is "thirty-three million, one hundred twenty thousand, one hundred twenty-one".