221000022201 has 16 divisors (see below), whose sum is σ = 345863613824. Its totient is φ = 122872598784.

The previous prime is 221000022169. The next prime is 221000022203. The reversal of 221000022201 is 102220000122.

221000022201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221000022201 - 2⁵ = 221000022169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221000022203) 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 15 ways as a sum of consecutive naturals, for example, 142212880 + ... + 142214433.

It is an arithmetic number, because the mean of its divisors is an integer number (21616475864).

Almost surely, 2^221000022201 is an apocalyptic number.

221000022201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221000022201 is a deficient number, since it is larger than the sum of its proper divisors (124863591623).

221000022201 is a wasteful number, since it uses less digits than its factorization.

221000022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284427360.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221000022201 its reverse (102220000122), we get a palindrome (323220022323).

The spelling of 221000022201 in words is "two hundred twenty-one billion, twenty-two thousand, two hundred one".