221022001120211 has 4 divisors (see below), whose sum is σ = 221025561402024. Its totient is φ = 221018440838400.

The previous prime is 221022001120133. The next prime is 221022001120223. The reversal of 221022001120211 is 112021100220122.

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 221022001120211 - 2¹⁸ = 221022000858067 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 221022001120211.

It is not an unprimeable number, because it can be changed into a prime (221022001120411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780047785 + ... + 1780171946.

It is an arithmetic number, because the mean of its divisors is an integer number (55256390350506).

Almost surely, 2^{221022001120211} is an apocalyptic number.

221022001120211 is a deficient number, since it is larger than the sum of its proper divisors (3560281813).

221022001120211 is an equidigital number, since it uses as much as digits as its factorization.

221022001120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560281812.

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

Adding to 221022001120211 its reverse (112021100220122), we get a palindrome (333043101340333).

The spelling of 221022001120211 in words is "two hundred twenty-one trillion, twenty-two billion, one million, one hundred twenty thousand, two hundred eleven".