221002220222011 has 4 divisors (see below), whose sum is σ = 221005458940000. Its totient is φ = 220998981504024.

The previous prime is 221002220222009. The next prime is 221002220222051. The reversal of 221002220222011 is 110222022200122.

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 221002220222011 - 2¹ = 221002220222009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221002220222011.

It is not an unprimeable number, because it can be changed into a prime (221002220222051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1619256636 + ... + 1619393113.

It is an arithmetic number, because the mean of its divisors is an integer number (55251364735000).

Almost surely, 2^{221002220222011} is an apocalyptic number.

221002220222011 is a deficient number, since it is larger than the sum of its proper divisors (3238717989).

221002220222011 is an equidigital number, since it uses as much as digits as its factorization.

221002220222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238717988.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221002220222011 its reverse (110222022200122), we get a palindrome (331224242422133).

The spelling of 221002220222011 in words is "two hundred twenty-one trillion, two billion, two hundred twenty million, two hundred twenty-two thousand, eleven".