221102220120201 has 48 divisors (see below), whose sum is σ = 379212097566848. Its totient is φ = 126110587132800.

The previous prime is 221102220120181. The next prime is 221102220120227. The reversal of 221102220120201 is 102021022201122.

It is a happy number.

221102220120201 is a `hidden beast` number, since 2 + 21 + 102 + 220 + 120 + 201 = 666.

It is not a de Polignac number, because 221102220120201 - 2⁴⁵ = 185917848031369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221102220120251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119212540 + ... + 121053021.

Almost surely, 2^{221102220120201} is an apocalyptic number.

221102220120201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221102220120201 is a deficient number, since it is larger than the sum of its proper divisors (158109877446647).

221102220120201 is an equidigital number, since it uses as much as digits as its factorization.

221102220120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240266124 (or 240266112 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221102220120201 its reverse (102021022201122), we get a palindrome (323123242321323).

The spelling of 221102220120201 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred twenty million, one hundred twenty thousand, two hundred one".