21380102 has 8 divisors (see below), whose sum is σ = 32549016. Its totient is φ = 10530432.

The previous prime is 21380081. The next prime is 21380113. The reversal of 21380102 is 20108312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79643 + ... + 79910.

It is an arithmetic number, because the mean of its divisors is an integer number (4068627).

Almost surely, 2^21380102 is an apocalyptic number.

21380102 is a deficient number, since it is larger than the sum of its proper divisors (11168914).

21380102 is a wasteful number, since it uses less digits than its factorization.

21380102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159622.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 21380102 is about 4623.8622384323. The cubic root of 21380102 is about 277.5470342049.

Adding to 21380102 its reverse (20108312), we get a palindrome (41488414).

The spelling of 21380102 in words is "twenty-one million, three hundred eighty thousand, one hundred two".