21220320112214 has 4 divisors (see below), whose sum is σ = 31830480168324. Its totient is φ = 10610160056106.

The previous prime is 21220320112177. The next prime is 21220320112217. The reversal of 21220320112214 is 41221102302212.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21220320112214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220320112217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5305080028052 + ... + 5305080028055.

It is an arithmetic number, because the mean of its divisors is an integer number (7957620042081).

Almost surely, 2^{21220320112214} is an apocalyptic number.

21220320112214 is a deficient number, since it is larger than the sum of its proper divisors (10610160056110).

21220320112214 is a wasteful number, since it uses less digits than its factorization.

21220320112214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10610160056109.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21220320112214 its reverse (41221102302212), we get a palindrome (62441422414426).

The spelling of 21220320112214 in words is "twenty-one trillion, two hundred twenty billion, three hundred twenty million, one hundred twelve thousand, two hundred fourteen".