21324102 has 16 divisors (see below), whose sum is σ = 42716160. Its totient is φ = 7096712.

The previous prime is 21324101. The next prime is 21324109. The reversal of 21324102 is 20142312.

It is a super-2 number, since 2×21324102² = 909434652212808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21324101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843 + ... + 6785.

It is an arithmetic number, because the mean of its divisors is an integer number (2669760).

Almost surely, 2^21324102 is an apocalyptic number.

21324102 is an abundant number, since it is smaller than the sum of its proper divisors (21392058).

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

21324102 is a wasteful number, since it uses less digits than its factorization.

21324102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5667.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21324102 is about 4617.8027242402. The cubic root of 21324102 is about 277.3044999122.

Adding to 21324102 its reverse (20142312), we get a palindrome (41466414).

The spelling of 21324102 in words is "twenty-one million, three hundred twenty-four thousand, one hundred two".