221011202002211 has 4 divisors (see below), whose sum is σ = 225181224681552. Its totient is φ = 216841179322872.

The previous prime is 221011202002187. The next prime is 221011202002271. The reversal of 221011202002211 is 112200202110122.

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 221011202002211 - 2⁴² = 216613155491107 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 221011202002211.

It is not an unprimeable number, because it can be changed into a prime (221011202002271) 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, 2085011339591 + ... + 2085011339696.

It is an arithmetic number, because the mean of its divisors is an integer number (56295306170388).

Almost surely, 2^{221011202002211} is an apocalyptic number.

221011202002211 is a deficient number, since it is larger than the sum of its proper divisors (4170022679341).

221011202002211 is an equidigital number, since it uses as much as digits as its factorization.

221011202002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170022679340.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221011202002211 its reverse (112200202110122), we get a palindrome (333211404112333).

The spelling of 221011202002211 in words is "two hundred twenty-one trillion, eleven billion, two hundred two million, two thousand, two hundred eleven".