21814102 has 4 divisors (see below), whose sum is σ = 32721156. Its totient is φ = 10907050.

The previous prime is 21814087. The next prime is 21814123. The reversal of 21814102 is 20141812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21814102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5453524 + ... + 5453527.

It is an arithmetic number, because the mean of its divisors is an integer number (8180289).

Almost surely, 2^21814102 is an apocalyptic number.

21814102 is a deficient number, since it is larger than the sum of its proper divisors (10907054).

21814102 is a wasteful number, since it uses less digits than its factorization.

21814102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10907053.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 21814102 is about 4670.5569261064. The cubic root of 21814102 is about 279.4124670025.

Adding to 21814102 its reverse (20141812), we get a palindrome (41955914).

The spelling of 21814102 in words is "twenty-one million, eight hundred fourteen thousand, one hundred two".