221200201002111 has 4 divisors (see below), whose sum is σ = 294933601336152. Its totient is φ = 147466800668072.

The previous prime is 221200201002071. The next prime is 221200201002167. The reversal of 221200201002111 is 111200102002122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221200201002111 - 2¹⁵ = 221200200969343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200201002181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36866700167016 + ... + 36866700167021.

It is an arithmetic number, because the mean of its divisors is an integer number (73733400334038).

Almost surely, 2^{221200201002111} is an apocalyptic number.

221200201002111 is a deficient number, since it is larger than the sum of its proper divisors (73733400334041).

221200201002111 is an equidigital number, since it uses as much as digits as its factorization.

221200201002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73733400334040.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221200201002111 its reverse (111200102002122), we get a palindrome (332400303004233).

The spelling of 221200201002111 in words is "two hundred twenty-one trillion, two hundred billion, two hundred one million, two thousand, one hundred eleven".