221200202101 has 12 divisors (see below), whose sum is σ = 222934263552. Its totient is φ = 219478583144.

The previous prime is 221200202099. The next prime is 221200202123. The reversal of 221200202101 is 101202002122.

It is a happy number.

221200202101 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 221200202101 - 2¹ = 221200202099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200202401) 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 11 ways as a sum of consecutive naturals, for example, 14955756 + ... + 14970538.

It is an arithmetic number, because the mean of its divisors is an integer number (18577855296).

Almost surely, 2^221200202101 is an apocalyptic number.

It is an amenable number.

221200202101 is a deficient number, since it is larger than the sum of its proper divisors (1734061451).

221200202101 is an equidigital number, since it uses as much as digits as its factorization.

221200202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15608 (or 15429 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221200202101 its reverse (101202002122), we get a palindrome (322402204223).

The spelling of 221200202101 in words is "two hundred twenty-one billion, two hundred million, two hundred two thousand, one hundred one".