21616122004214 has 4 divisors (see below), whose sum is σ = 32424183006324. Its totient is φ = 10808061002106.

The previous prime is 21616122004207. The next prime is 21616122004229. The reversal of 21616122004214 is 41240022161612.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 5404030501052 + ... + 5404030501055.

It is an arithmetic number, because the mean of its divisors is an integer number (8106045751581).

Almost surely, 2^{21616122004214} is an apocalyptic number.

21616122004214 is a deficient number, since it is larger than the sum of its proper divisors (10808061002110).

21616122004214 is a wasteful number, since it uses less digits than its factorization.

21616122004214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10808061002109.

The product of its (nonzero) digits is 9216, while the sum is 32.

Adding to 21616122004214 its reverse (41240022161612), we get a palindrome (62856144165826).

The spelling of 21616122004214 in words is "twenty-one trillion, six hundred sixteen billion, one hundred twenty-two million, four thousand, two hundred fourteen".