221200102011 has 16 divisors (see below), whose sum is σ = 340216982784. Its totient is φ = 125218748064.

The previous prime is 221200101977. The next prime is 221200102021. The reversal of 221200102011 is 110201002122.

221200102011 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 221200102011 - 2¹¹ = 221200099963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221200102021) 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, 49218960 + ... + 49223453.

It is an arithmetic number, because the mean of its divisors is an integer number (21263561424).

Almost surely, 2^221200102011 is an apocalyptic number.

221200102011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

221200102011 is a deficient number, since it is larger than the sum of its proper divisors (119016880773).

221200102011 is a wasteful number, since it uses less digits than its factorization.

221200102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98442530.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221200102011 its reverse (110201002122), we get a palindrome (331401104133).

The spelling of 221200102011 in words is "two hundred twenty-one billion, two hundred million, one hundred two thousand, eleven".