21200214 has 16 divisors (see below), whose sum is σ = 48457728. Its totient is φ = 6057192.

The previous prime is 21200209. The next prime is 21200233. The reversal of 21200214 is 41200212.

It is a self number, because there is not a number n which added to its sum of digits gives 21200214.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252342 + ... + 252425.

It is an arithmetic number, because the mean of its divisors is an integer number (3028608).

Almost surely, 2^21200214 is an apocalyptic number.

21200214 is an abundant number, since it is smaller than the sum of its proper divisors (27257514).

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

21200214 is a wasteful number, since it uses less digits than its factorization.

21200214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504779.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 21200214 is about 4604.3690121449. The cubic root of 21200214 is about 276.7664319807.

Adding to 21200214 its reverse (41200212), we get a palindrome (62400426).

The spelling of 21200214 in words is "twenty-one million, two hundred thousand, two hundred fourteen".