21366102 has 16 divisors (see below), whose sum is σ = 43539120. Its totient is φ = 6987552.

The previous prime is 21366097. The next prime is 21366113. The reversal of 21366102 is 20166312.

It is a happy number.

It is a congruent number.

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, 33277 + ... + 33912.

It is an arithmetic number, because the mean of its divisors is an integer number (2721195).

Almost surely, 2^21366102 is an apocalyptic number.

21366102 is an abundant number, since it is smaller than the sum of its proper divisors (22173018).

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

21366102 is a wasteful number, since it uses less digits than its factorization.

21366102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67247.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 21366102 is about 4622.3481045893. The cubic root of 21366102 is about 277.4864403731.

The spelling of 21366102 in words is "twenty-one million, three hundred sixty-six thousand, one hundred two".