221200021213101 has 20 divisors (see below), whose sum is σ = 377639542389472. Its totient is φ = 126400012121448.

The previous prime is 221200021213097. The next prime is 221200021213151. The reversal of 221200021213101 is 101312120002122.

221200021213101 is a `hidden beast` number, since 22 + 120 + 0 + 0 + 212 + 1 + 310 + 1 = 666.

It is not a de Polignac number, because 221200021213101 - 2² = 221200021213097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200021213151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 195061746535 + ... + 195061747668.

Almost surely, 2^{221200021213101} is an apocalyptic number.

221200021213101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221200021213101 is a deficient number, since it is larger than the sum of its proper divisors (156439521176371).

221200021213101 is an equidigital number, since it uses as much as digits as its factorization.

221200021213101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390123494222 (or 390123494213 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 221200021213101 its reverse (101312120002122), we get a palindrome (322512141215223).

The spelling of 221200021213101 in words is "two hundred twenty-one trillion, two hundred billion, twenty-one million, two hundred thirteen thousand, one hundred one".