221122222200201 has 48 divisors (see below), whose sum is σ = 343172968617600. Its totient is φ = 126278980515072.

The previous prime is 221122222200137. The next prime is 221122222200379. The reversal of 221122222200201 is 102002222221122.

It is not a de Polignac number, because 221122222200201 - 2⁶ = 221122222200137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221122222205201) 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 47 ways as a sum of consecutive naturals, for example, 2662060996 + ... + 2662144058.

It is an arithmetic number, because the mean of its divisors is an integer number (7149436846200).

Almost surely, 2^{221122222200201} is an apocalyptic number.

221122222200201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221122222200201 is a deficient number, since it is larger than the sum of its proper divisors (122050746417399).

221122222200201 is a wasteful number, since it uses less digits than its factorization.

221122222200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93838 (or 93831 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221122222200201 its reverse (102002222221122), we get a palindrome (323124444421323).

The spelling of 221122222200201 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred thousand, two hundred one".