221002002011 has 6 divisors (see below), whose sum is σ = 257083961580. Its totient is φ = 189430287396.

The previous prime is 221002002007. The next prime is 221002002017. The reversal of 221002002011 is 110200200122.

It is a happy number.

It is not a de Polignac number, because 221002002011 - 2² = 221002002007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221002001983 and 221002002001.

It is not an unprimeable number, because it can be changed into a prime (221002002017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2255122421 + ... + 2255122518.

It is an arithmetic number, because the mean of its divisors is an integer number (42847326930).

Almost surely, 2^221002002011 is an apocalyptic number.

221002002011 is a deficient number, since it is larger than the sum of its proper divisors (36081959569).

221002002011 is an equidigital number, since it uses as much as digits as its factorization.

221002002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510244953 (or 4510244946 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221002002011 its reverse (110200200122), we get a palindrome (331202202133).

The spelling of 221002002011 in words is "two hundred twenty-one billion, two million, two thousand, eleven".