22011010122221 has 4 divisors (see below), whose sum is σ = 23169484339200. Its totient is φ = 20852535905244.

The previous prime is 22011010122217. The next prime is 22011010122223. The reversal of 22011010122221 is 12222101011022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22011010122221 - 2² = 22011010122217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22011010122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011010122223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579237108461 + ... + 579237108498.

It is an arithmetic number, because the mean of its divisors is an integer number (5792371084800).

Almost surely, 2^{22011010122221} is an apocalyptic number.

It is an amenable number.

22011010122221 is a deficient number, since it is larger than the sum of its proper divisors (1158474216979).

22011010122221 is a wasteful number, since it uses less digits than its factorization.

22011010122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158474216978.

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

Adding to 22011010122221 its reverse (12222101011022), we get a palindrome (34233111133243).

The spelling of 22011010122221 in words is "twenty-two trillion, eleven billion, ten million, one hundred twenty-two thousand, two hundred twenty-one".