21334105 has 16 divisors (see below), whose sum is σ = 28042560. Its totient is φ = 15484608.

The previous prime is 21334067. The next prime is 21334123. The reversal of 21334105 is 50143312.

It is a cyclic number.

It is not a de Polignac number, because 21334105 - 2¹¹ = 21332057 is a prime.

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, 1054 + ... + 6616.

It is an arithmetic number, because the mean of its divisors is an integer number (1752660).

Almost surely, 2^21334105 is an apocalyptic number.

It is an amenable number.

21334105 is a deficient number, since it is larger than the sum of its proper divisors (6708455).

21334105 is a wasteful number, since it uses less digits than its factorization.

21334105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 21334105 is about 4618.8856881287. The cubic root of 21334105 is about 277.3478537236.

Adding to 21334105 its reverse (50143312), we get a palindrome (71477417).

The spelling of 21334105 in words is "twenty-one million, three hundred thirty-four thousand, one hundred five".