21334110 has 96 divisors (see below), whose sum is σ = 62249472. Its totient is φ = 4656960.

The previous prime is 21334067. The next prime is 21334123. The reversal of 21334110 is 1143312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21334110.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 33495 + ... + 34125.

It is an arithmetic number, because the mean of its divisors is an integer number (648432).

Almost surely, 2^21334110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21334110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31124736).

21334110 is an abundant number, since it is smaller than the sum of its proper divisors (40915362).

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

21334110 is a wasteful number, since it uses less digits than its factorization.

21334110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 21334110 is about 4618.8862293847. The cubic root of 21334110 is about 277.3478753906.

Adding to 21334110 its reverse (1143312), we get a palindrome (22477422).

The spelling of 21334110 in words is "twenty-one million, three hundred thirty-four thousand, one hundred ten".