211222102210221 has 8 divisors (see below), whose sum is σ = 281630122379424. Its totient is φ = 140814408423920.

The previous prime is 211222102210219. The next prime is 211222102210373. The reversal of 211222102210221 is 122012201222112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211222102210221 - 2¹ = 211222102210219 is a prime.

It is a super-2 number, since 2×211222102210221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222102210921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80081670 + ... + 82677191.

It is an arithmetic number, because the mean of its divisors is an integer number (35203765297428).

Almost surely, 2^{211222102210221} is an apocalyptic number.

It is an amenable number.

211222102210221 is a deficient number, since it is larger than the sum of its proper divisors (70408020169203).

211222102210221 is a wasteful number, since it uses less digits than its factorization.

211222102210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163191451.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211222102210221 its reverse (122012201222112), we get a palindrome (333234303432333).

The spelling of 211222102210221 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred two million, two hundred ten thousand, two hundred twenty-one".