21102334 has 16 divisors (see below), whose sum is σ = 34876656. Its totient is φ = 9496000.

The previous prime is 21102313. The next prime is 21102377. The reversal of 21102334 is 43320112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2527 + ... + 6970.

It is an arithmetic number, because the mean of its divisors is an integer number (2179791).

Almost surely, 2^21102334 is an apocalyptic number.

21102334 is a deficient number, since it is larger than the sum of its proper divisors (13774322).

21102334 is a wasteful number, since it uses less digits than its factorization.

21102334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9611.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 21102334 is about 4593.7276802179. The cubic root of 21102334 is about 276.3398372871.

Adding to 21102334 its reverse (43320112), we get a palindrome (64422446).

It can be divided in two parts, 2110 and 2334, that added together give a palindrome (4444).

The spelling of 21102334 in words is "twenty-one million, one hundred two thousand, three hundred thirty-four".