33323121 has 12 divisors (see below), whose sum is σ = 51836148. Its totient is φ = 20506464.

The previous prime is 33323099. The next prime is 33323123. The reversal of 33323121 is 12132333.

It can be written as a sum of positive squares in 2 ways, for example, as 2852721 + 30470400 = 1689^2 + 5520^2 .

It is not a de Polignac number, because 33323121 - 2⁶ = 33323057 is a prime.

It is a super-2 number, since 2×33323121² = 2220860786361282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33323094 and 33323103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33323123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142290 + ... + 142523.

It is an arithmetic number, because the mean of its divisors is an integer number (4319679).

Almost surely, 2^33323121 is an apocalyptic number.

It is an amenable number.

33323121 is a deficient number, since it is larger than the sum of its proper divisors (18513027).

33323121 is a wasteful number, since it uses less digits than its factorization.

33323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284832 (or 284829 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 33323121 is about 5772.6182101365. The cubic root of 33323121 is about 321.7969251801.

Adding to 33323121 its reverse (12132333), we get a palindrome (45455454).

The spelling of 33323121 in words is "thirty-three million, three hundred twenty-three thousand, one hundred twenty-one".