22112110020221 has 8 divisors (see below), whose sum is σ = 23874257610840. Its totient is φ = 20358707579712.

The previous prime is 22112110020211. The next prime is 22112110020233. The reversal of 22112110020221 is 12202001121122.

It can be written as a sum of positive squares in 4 ways, for example, as 197259451321 + 21914850568900 = 444139^2 + 4681330^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22112110020221 is a prime.

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 22112110020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112110020211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2186282270 + ... + 2186292383.

It is an arithmetic number, because the mean of its divisors is an integer number (2984282201355).

Almost surely, 2^{22112110020221} is an apocalyptic number.

It is an amenable number.

22112110020221 is a deficient number, since it is larger than the sum of its proper divisors (1762147590619).

22112110020221 is a wasteful number, since it uses less digits than its factorization.

22112110020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372575055.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22112110020221 its reverse (12202001121122), we get a palindrome (34314111141343).

The spelling of 22112110020221 in words is "twenty-two trillion, one hundred twelve billion, one hundred ten million, twenty thousand, two hundred twenty-one".