221200212202011 has 36 divisors (see below), whose sum is σ = 375356512921104. Its totient is φ = 125148634884000.

The previous prime is 221200212201959. The next prime is 221200212202111. The reversal of 221200212202011 is 110202212002122.

It is a happy number.

221200212202011 is a `hidden beast` number, since 2 + 21 + 200 + 21 + 220 + 201 + 1 = 666.

It is not a de Polignac number, because 221200212202011 - 2⁹ = 221200212201499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221200212202111) 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 35 ways as a sum of consecutive naturals, for example, 2483063295 + ... + 2483152376.

It is an arithmetic number, because the mean of its divisors is an integer number (10426569803364).

Almost surely, 2^{221200212202011} is an apocalyptic number.

221200212202011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

221200212202011 is a deficient number, since it is larger than the sum of its proper divisors (154156300719093).

221200212202011 is a wasteful number, since it uses less digits than its factorization.

221200212202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966215792 (or 4966215782 counting only the distinct ones).

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

Adding to 221200212202011 its reverse (110202212002122), we get a palindrome (331402424204133).

The spelling of 221200212202011 in words is "two hundred twenty-one trillion, two hundred billion, two hundred twelve million, two hundred two thousand, eleven".