21102096 has 40 divisors (see below), whose sum is σ = 55415104. Its totient is φ = 6917760.

The previous prime is 21102091. The next prime is 21102101. The reversal of 21102096 is 69020112.

It is an interprime number because it is at equal distance from previous prime (21102091) and next prime (21102101).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676 + ... + 6531.

Almost surely, 2^21102096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21102096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27707552).

21102096 is an abundant number, since it is smaller than the sum of its proper divisors (34313008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102096 is a wasteful number, since it uses less digits than its factorization.

21102096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7279 (or 7273 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 21102096 is about 4593.7017752571. The cubic root of 21102096 is about 276.3387983952.

The spelling of 21102096 in words is "twenty-one million, one hundred two thousand, ninety-six".