22002110111221 has 8 divisors (see below), whose sum is σ = 22540097835864. Its totient is φ = 21464186714880.

The previous prime is 22002110111209. The next prime is 22002110111257. The reversal of 22002110111221 is 12211101120022.

It can be written as a sum of positive squares in 4 ways, for example, as 506730422500 + 21495379688721 = 711850^2 + 4636311^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22002110111221 - 2⁹ = 22002110110709 is a prime.

It is a super-2 number, since 2×22002110111221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22002110111195 and 22002110111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002110111321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15389296 + ... + 16758121.

It is an arithmetic number, because the mean of its divisors is an integer number (2817512229483).

Almost surely, 2^{22002110111221} is an apocalyptic number.

It is an amenable number.

22002110111221 is a deficient number, since it is larger than the sum of its proper divisors (537987724643).

22002110111221 is a wasteful number, since it uses less digits than its factorization.

22002110111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32164151.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22002110111221 its reverse (12211101120022), we get a palindrome (34213211231243).

The spelling of 22002110111221 in words is "twenty-two trillion, two billion, one hundred ten million, one hundred eleven thousand, two hundred twenty-one".