21234334 has 8 divisors (see below), whose sum is σ = 34747128. Its totient is φ = 9651960.

The previous prime is 21234307. The next prime is 21234347. The reversal of 21234334 is 43343212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 965197 = 21234334 / (2 + 1 + 2 + 3 + 4 + 3 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482577 + ... + 482620.

It is an arithmetic number, because the mean of its divisors is an integer number (4343391).

Almost surely, 2^21234334 is an apocalyptic number.

21234334 is a deficient number, since it is larger than the sum of its proper divisors (13512794).

21234334 is a wasteful number, since it uses less digits than its factorization.

21234334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965210.

The product of its digits is 1728, while the sum is 22.

The square root of 21234334 is about 4608.0726990793. The cubic root of 21234334 is about 276.9148299974.

Adding to 21234334 its reverse (43343212), we get a palindrome (64577546).

The spelling of 21234334 in words is "twenty-one million, two hundred thirty-four thousand, three hundred thirty-four".