21242122214 has 16 divisors (see below), whose sum is σ = 31973213376. Its totient is φ = 10584427200.

The previous prime is 21242122177. The next prime is 21242122229. The reversal of 21242122214 is 41222124212.

It is a self number, because there is not a number n which added to its sum of digits gives 21242122214.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077284 + ... + 1096824.

It is an arithmetic number, because the mean of its divisors is an integer number (1998325836).

Almost surely, 2^21242122214 is an apocalyptic number.

21242122214 is a deficient number, since it is larger than the sum of its proper divisors (10731091162).

21242122214 is a wasteful number, since it uses less digits than its factorization.

21242122214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21391.

The product of its digits is 1024, while the sum is 23.

Adding to 21242122214 its reverse (41222124212), we get a palindrome (62464246426).

The spelling of 21242122214 in words is "twenty-one billion, two hundred forty-two million, one hundred twenty-two thousand, two hundred fourteen".