21421300214 has 4 divisors (see below), whose sum is σ = 32131950324. Its totient is φ = 10710650106.

The previous prime is 21421300213. The next prime is 21421300223. The reversal of 21421300214 is 41200312412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21421300213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5355325052 + ... + 5355325055.

It is an arithmetic number, because the mean of its divisors is an integer number (8032987581).

Almost surely, 2^21421300214 is an apocalyptic number.

21421300214 is a deficient number, since it is larger than the sum of its proper divisors (10710650110).

21421300214 is a wasteful number, since it uses less digits than its factorization.

21421300214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10710650109.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21421300214 its reverse (41200312412), we get a palindrome (62621612626).

The spelling of 21421300214 in words is "twenty-one billion, four hundred twenty-one million, three hundred thousand, two hundred fourteen".