22000112202221 has 2 divisors, whose sum is σ = 22000112202222. Its totient is φ = 22000112202220.

The previous prime is 22000112202209. The next prime is 22000112202301. The reversal of 22000112202221 is 12220221100022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17270091832900 + 4730020369321 = 4155730^2 + 2174861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000112202221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22000112202221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22000172202221) 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 as a sum of consecutive naturals, namely, 11000056101110 + 11000056101111.

It is an arithmetic number, because the mean of its divisors is an integer number (11000056101111).

Almost surely, 2^{22000112202221} is an apocalyptic number.

It is an amenable number.

22000112202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000112202221 is an equidigital number, since it uses as much as digits as its factorization.

22000112202221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22000112202221 its reverse (12220221100022), we get a palindrome (34220333302243).

The spelling of 22000112202221 in words is "twenty-two trillion, one hundred twelve million, two hundred two thousand, two hundred twenty-one".