21333034 has 4 divisors (see below), whose sum is σ = 31999554. Its totient is φ = 10666516.

The previous prime is 21333023. The next prime is 21333047. The reversal of 21333034 is 43033312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16426809 + 4906225 = 4053^2 + 2215^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333257 + ... + 5333260.

Almost surely, 2^21333034 is an apocalyptic number.

21333034 is a deficient number, since it is larger than the sum of its proper divisors (10666520).

21333034 is a wasteful number, since it uses less digits than its factorization.

21333034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10666519.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 21333034 is about 4618.7697496195. The cubic root of 21333034 is about 277.3432125708.

Adding to 21333034 its reverse (43033312), we get a palindrome (64366346).

The spelling of 21333034 in words is "twenty-one million, three hundred thirty-three thousand, thirty-four".