221122011202201 has 4 divisors (see below), whose sum is σ = 221336069297332. Its totient is φ = 220907953107072.

The previous prime is 221122011202151. The next prime is 221122011202241. The reversal of 221122011202201 is 102202110221122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170616470976576 + 50505540225625 = 13062024^2 + 7106725^2 .

It is a cyclic number.

It is not a de Polignac number, because 221122011202201 - 2¹⁹ = 221122010677913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221122011202241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107029046016 + ... + 107029048081.

It is an arithmetic number, because the mean of its divisors is an integer number (55334017324333).

Almost surely, 2^{221122011202201} is an apocalyptic number.

It is an amenable number.

221122011202201 is a deficient number, since it is larger than the sum of its proper divisors (214058095131).

221122011202201 is a wasteful number, since it uses less digits than its factorization.

221122011202201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214058095130.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221122011202201 its reverse (102202110221122), we get a palindrome (323324121423323).

The spelling of 221122011202201 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, eleven million, two hundred two thousand, two hundred one".