21234202 has 8 divisors (see below), whose sum is σ = 34746912. Its totient is φ = 9651900.

The previous prime is 21234151. The next prime is 21234203. The reversal of 21234202 is 20243212.

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

It is not an unprimeable number, because it can be changed into a prime (21234203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482574 + ... + 482617.

It is an arithmetic number, because the mean of its divisors is an integer number (4343364).

Almost surely, 2^21234202 is an apocalyptic number.

21234202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21234202 is a deficient number, since it is larger than the sum of its proper divisors (13512710).

21234202 is a wasteful number, since it uses less digits than its factorization.

21234202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965204.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 21234202 is about 4608.0583763663. The cubic root of 21234202 is about 276.9142561966.

Adding to 21234202 its reverse (20243212), we get a palindrome (41477414).

The spelling of 21234202 in words is "twenty-one million, two hundred thirty-four thousand, two hundred two".