21103034 has 16 divisors (see below), whose sum is σ = 33501600. Its totient is φ = 9941904.

The previous prime is 21103021. The next prime is 21103051. The reversal of 21103034 is 43030112.

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, 6077 + ... + 8895.

It is an arithmetic number, because the mean of its divisors is an integer number (2093850).

Almost surely, 2^21103034 is an apocalyptic number.

21103034 is a deficient number, since it is larger than the sum of its proper divisors (12398566).

21103034 is a wasteful number, since it uses less digits than its factorization.

21103034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3037.

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

The square root of 21103034 is about 4593.8038704324. The cubic root of 21103034 is about 276.3428928061.

Adding to 21103034 its reverse (43030112), we get a palindrome (64133146).

The spelling of 21103034 in words is "twenty-one million, one hundred three thousand, thirty-four".