33162021 has 16 divisors (see below), whose sum is σ = 51265920. Its totient is φ = 21146400.

The previous prime is 33162007. The next prime is 33162029. The reversal of 33162021 is 12026133.

It is not a de Polignac number, because 33162021 - 2⁷ = 33161893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33161985 and 33162003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33162029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26080 + ... + 27321.

It is an arithmetic number, because the mean of its divisors is an integer number (3204120).

Almost surely, 2^33162021 is an apocalyptic number.

It is an amenable number.

33162021 is a deficient number, since it is larger than the sum of its proper divisors (18103899).

33162021 is a wasteful number, since it uses less digits than its factorization.

33162021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53433 (or 53427 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 33162021 is about 5758.6474974598. The cubic root of 33162021 is about 321.2775135282.

Adding to 33162021 its reverse (12026133), we get a palindrome (45188154).

The spelling of 33162021 in words is "thirty-three million, one hundred sixty-two thousand, twenty-one".