33021401 has 16 divisors (see below), whose sum is σ = 39882240. Its totient is φ = 26738880.

The previous prime is 33021389. The next prime is 33021409. The reversal of 33021401 is 10412033.

It is not a de Polignac number, because 33021401 - 2¹⁴ = 33005017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33021409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7811 + ... + 11271.

It is an arithmetic number, because the mean of its divisors is an integer number (2492640).

Almost surely, 2^33021401 is an apocalyptic number.

It is an amenable number.

33021401 is a deficient number, since it is larger than the sum of its proper divisors (6860839).

33021401 is a wasteful number, since it uses less digits than its factorization.

33021401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544.

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

The square root of 33021401 is about 5746.4250625933. The cubic root of 33021401 is about 320.8227558365.

Adding to 33021401 its reverse (10412033), we get a palindrome (43433434).

The spelling of 33021401 in words is "thirty-three million, twenty-one thousand, four hundred one".