21223034 has 32 divisors (see below), whose sum is σ = 38092800. Its totient is φ = 8676720.

The previous prime is 21223009. The next prime is 21223051. The reversal of 21223034 is 43032212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33977 + ... + 34595.

It is an arithmetic number, because the mean of its divisors is an integer number (1190400).

Almost surely, 2^21223034 is an apocalyptic number.

21223034 is a deficient number, since it is larger than the sum of its proper divisors (16869766).

21223034 is a wasteful number, since it uses less digits than its factorization.

21223034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 21223034 is about 4606.8464267870. The cubic root of 21223034 is about 276.8657005575.

Adding to 21223034 its reverse (43032212), we get a palindrome (64255246).

The spelling of 21223034 in words is "twenty-one million, two hundred twenty-three thousand, thirty-four".