21033034 has 16 divisors (see below), whose sum is σ = 34569216. Its totient is φ = 9518400.

The previous prime is 21033011. The next prime is 21033053. The reversal of 21033034 is 43033012.

It is a junction number, because it is equal to n+sod(n) for n = 21032999 and 21033017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3319 + ... + 7285.

It is an arithmetic number, because the mean of its divisors is an integer number (2160576).

Almost surely, 2^21033034 is an apocalyptic number.

21033034 is a deficient number, since it is larger than the sum of its proper divisors (13536182).

21033034 is a wasteful number, since it uses less digits than its factorization.

21033034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 21033034 is about 4586.1785835268. The cubic root of 21033034 is about 276.0370058201.

Adding to 21033034 its reverse (43033012), we get a palindrome (64066046).

The spelling of 21033034 in words is "twenty-one million, thirty-three thousand, thirty-four".