21202414 has 4 divisors (see below), whose sum is σ = 31803624. Its totient is φ = 10601206.

The previous prime is 21202409. The next prime is 21202421. The reversal of 21202414 is 41420212.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5300602 + ... + 5300605.

It is an arithmetic number, because the mean of its divisors is an integer number (7950906).

Almost surely, 2^21202414 is an apocalyptic number.

21202414 is a deficient number, since it is larger than the sum of its proper divisors (10601210).

21202414 is a wasteful number, since it uses less digits than its factorization.

21202414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10601209.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 21202414 is about 4604.6079094750. The cubic root of 21202414 is about 276.7760052346.

Adding to 21202414 its reverse (41420212), we get a palindrome (62622626).

The spelling of 21202414 in words is "twenty-one million, two hundred two thousand, four hundred fourteen".